Home / 21,365.04-29,484.58-12,290.38

Finding the Fourth Proportional to 21,365.04, 29,484.58 and 12,290.38

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Solution

The fourth proportional to 21,365.04, 29,484.58 and 12,290.38 is: 16,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.04 : 29,484.58 = 12,290.38 : x
  2. Step 2: Convert to fraction form
    21,365.04/29,484.58 = 12,290.38/x
  3. Step 3: Cross multiply
    21,365.04x = 29,484.58 × 12,290.38
  4. Step 4: Simplify right side
    21,365.04x = 362,376,692.34
  5. Step 5: Solve for x
    x = 362,376,692.34/21,365.04
  6. Step 6: Final answer
    x = 16,961.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.