Home / 21,551.16-29,759.31-15,895.74

Finding the Fourth Proportional to 21,551.16, 29,759.31 and 15,895.74

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Solution

The fourth proportional to 21,551.16, 29,759.31 and 15,895.74 is: 21,949.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.16 : 29,759.31 = 15,895.74 : x
  2. Step 2: Convert to fraction form
    21,551.16/29,759.31 = 15,895.74/x
  3. Step 3: Cross multiply
    21,551.16x = 29,759.31 × 15,895.74
  4. Step 4: Simplify right side
    21,551.16x = 473,046,254.34
  5. Step 5: Solve for x
    x = 473,046,254.34/21,551.16
  6. Step 6: Final answer
    x = 21,949.92

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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.