Home / 12,926.80-19,390.20-9,646.30

Finding the Fourth Proportional to 12,926.80, 19,390.20 and 9,646.30

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Solution

The fourth proportional to 12,926.80, 19,390.20 and 9,646.30 is: 14,469.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,926.80 : 19,390.20 = 9,646.30 : x
  2. Step 2: Convert to fraction form
    12,926.80/19,390.20 = 9,646.30/x
  3. Step 3: Cross multiply
    12,926.80x = 19,390.20 × 9,646.30
  4. Step 4: Simplify right side
    12,926.80x = 187,043,686.26
  5. Step 5: Solve for x
    x = 187,043,686.26/12,926.80
  6. Step 6: Final answer
    x = 14,469.45

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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.