Home / 22,281.52-30,720.18-15,915.73

Finding the Fourth Proportional to 22,281.52, 30,720.18 and 15,915.73

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Solution

The fourth proportional to 22,281.52, 30,720.18 and 15,915.73 is: 21,943.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,281.52 : 30,720.18 = 15,915.73 : x
  2. Step 2: Convert to fraction form
    22,281.52/30,720.18 = 15,915.73/x
  3. Step 3: Cross multiply
    22,281.52x = 30,720.18 × 15,915.73
  4. Step 4: Simplify right side
    22,281.52x = 488,934,090.43
  5. Step 5: Solve for x
    x = 488,934,090.43/22,281.52
  6. Step 6: Final answer
    x = 21,943.48

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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.