Home / 15,747.12-21,731.04-9,775.17

Finding the Fourth Proportional to 15,747.12, 21,731.04 and 9,775.17

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Solution

The fourth proportional to 15,747.12, 21,731.04 and 9,775.17 is: 13,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.12 : 21,731.04 = 9,775.17 : x
  2. Step 2: Convert to fraction form
    15,747.12/21,731.04 = 9,775.17/x
  3. Step 3: Cross multiply
    15,747.12x = 21,731.04 × 9,775.17
  4. Step 4: Simplify right side
    15,747.12x = 212,424,610.28
  5. Step 5: Solve for x
    x = 212,424,610.28/15,747.12
  6. Step 6: Final answer
    x = 13,489.74

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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.