Home / 21,253.32-29,292.84-15,938.91

Finding the Fourth Proportional to 21,253.32, 29,292.84 and 15,938.91

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Solution

The fourth proportional to 21,253.32, 29,292.84 and 15,938.91 is: 21,968.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.32 : 29,292.84 = 15,938.91 : x
  2. Step 2: Convert to fraction form
    21,253.32/29,292.84 = 15,938.91/x
  3. Step 3: Cross multiply
    21,253.32x = 29,292.84 × 15,938.91
  4. Step 4: Simplify right side
    21,253.32x = 466,895,940.40
  5. Step 5: Solve for x
    x = 466,895,940.40/21,253.32
  6. Step 6: Final answer
    x = 21,968.14

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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.