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Finding the Fourth Proportional to 21,697.64, 29,921.19 and 16,332.92

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Solution

The fourth proportional to 21,697.64, 29,921.19 and 16,332.92 is: 22,523.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,697.64 : 29,921.19 = 16,332.92 : x
  2. Step 2: Convert to fraction form
    21,697.64/29,921.19 = 16,332.92/x
  3. Step 3: Cross multiply
    21,697.64x = 29,921.19 × 16,332.92
  4. Step 4: Simplify right side
    21,697.64x = 488,700,402.57
  5. Step 5: Solve for x
    x = 488,700,402.57/21,697.64
  6. Step 6: Final answer
    x = 22,523.21

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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.