Home / 21,587.46-29,803.59-15,612.90

Finding the Fourth Proportional to 21,587.46, 29,803.59 and 15,612.90

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Solution

The fourth proportional to 21,587.46, 29,803.59 and 15,612.90 is: 21,555.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.46 : 29,803.59 = 15,612.90 : x
  2. Step 2: Convert to fraction form
    21,587.46/29,803.59 = 15,612.90/x
  3. Step 3: Cross multiply
    21,587.46x = 29,803.59 × 15,612.90
  4. Step 4: Simplify right side
    21,587.46x = 465,320,470.31
  5. Step 5: Solve for x
    x = 465,320,470.31/21,587.46
  6. Step 6: Final answer
    x = 21,555.13

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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.