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Finding the Fourth Proportional to 21,737.08, 32,607.78 and 7,887.16

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Solution

The fourth proportional to 21,737.08, 32,607.78 and 7,887.16 is: 11,831.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,737.08 : 32,607.78 = 7,887.16 : x
  2. Step 2: Convert to fraction form
    21,737.08/32,607.78 = 7,887.16/x
  3. Step 3: Cross multiply
    21,737.08x = 32,607.78 × 7,887.16
  4. Step 4: Simplify right side
    21,737.08x = 257,182,778.10
  5. Step 5: Solve for x
    x = 257,182,778.10/21,737.08
  6. Step 6: Final answer
    x = 11,831.52

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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.