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Finding the Fourth Proportional to 21,695.52, 32,541.12 and 14,720.28

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Solution

The fourth proportional to 21,695.52, 32,541.12 and 14,720.28 is: 22,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.52 : 32,541.12 = 14,720.28 : x
  2. Step 2: Convert to fraction form
    21,695.52/32,541.12 = 14,720.28/x
  3. Step 3: Cross multiply
    21,695.52x = 32,541.12 × 14,720.28
  4. Step 4: Simplify right side
    21,695.52x = 479,014,397.91
  5. Step 5: Solve for x
    x = 479,014,397.91/21,695.52
  6. Step 6: Final answer
    x = 22,078.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.