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Finding the Fourth Proportional to 20,468.46, 30,702.70 and 5,681.10

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Solution

The fourth proportional to 20,468.46, 30,702.70 and 5,681.10 is: 8,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.46 : 30,702.70 = 5,681.10 : x
  2. Step 2: Convert to fraction form
    20,468.46/30,702.70 = 5,681.10/x
  3. Step 3: Cross multiply
    20,468.46x = 30,702.70 × 5,681.10
  4. Step 4: Simplify right side
    20,468.46x = 174,425,108.97
  5. Step 5: Solve for x
    x = 174,425,108.97/20,468.46
  6. Step 6: Final answer
    x = 8,521.65

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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.