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Finding the Fourth Proportional to 13,904,909.40, 20,857,364.10 and 3,807,514.20

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Solution

The fourth proportional to 13,904,909.40, 20,857,364.10 and 3,807,514.20 is: 5,711,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,904,909.40 : 20,857,364.10 = 3,807,514.20 : x
  2. Step 2: Convert to fraction form
    13,904,909.40/20,857,364.10 = 3,807,514.20/x
  3. Step 3: Cross multiply
    13,904,909.40x = 20,857,364.10 × 3,807,514.20
  4. Step 4: Simplify right side
    13,904,909.40x = 79,414,709,985,320.23
  5. Step 5: Solve for x
    x = 79,414,709,985,320.23/13,904,909.40
  6. Step 6: Final answer
    x = 5,711,271.30

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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.