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Finding the Fourth Proportional to 20,476.94, 30,702.78 and 9,387.02

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Solution

The fourth proportional to 20,476.94, 30,702.78 and 9,387.02 is: 14,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.94 : 30,702.78 = 9,387.02 : x
  2. Step 2: Convert to fraction form
    20,476.94/30,702.78 = 9,387.02/x
  3. Step 3: Cross multiply
    20,476.94x = 30,702.78 × 9,387.02
  4. Step 4: Simplify right side
    20,476.94x = 288,207,686.67
  5. Step 5: Solve for x
    x = 288,207,686.67/20,476.94
  6. Step 6: Final answer
    x = 14,074.75

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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.