Home / 12,097,128.30-18,145,692.45-9,111,144.30

Finding the Fourth Proportional to 12,097,128.30, 18,145,692.45 and 9,111,144.30

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Solution

The fourth proportional to 12,097,128.30, 18,145,692.45 and 9,111,144.30 is: 13,666,716.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,097,128.30 : 18,145,692.45 = 9,111,144.30 : x
  2. Step 2: Convert to fraction form
    12,097,128.30/18,145,692.45 = 9,111,144.30/x
  3. Step 3: Cross multiply
    12,097,128.30x = 18,145,692.45 × 9,111,144.30
  4. Step 4: Simplify right side
    12,097,128.30x = 165,328,022,335,370.53
  5. Step 5: Solve for x
    x = 165,328,022,335,370.53/12,097,128.30
  6. Step 6: Final answer
    x = 13,666,716.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.