Home / 20,520,939.68-28,318,459.84-11,228,472.39

Finding the Fourth Proportional to 20,520,939.68, 28,318,459.84 and 11,228,472.39

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Solution

The fourth proportional to 20,520,939.68, 28,318,459.84 and 11,228,472.39 is: 15,495,052.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,939.68 : 28,318,459.84 = 11,228,472.39 : x
  2. Step 2: Convert to fraction form
    20,520,939.68/28,318,459.84 = 11,228,472.39/x
  3. Step 3: Cross multiply
    20,520,939.68x = 28,318,459.84 × 11,228,472.39
  4. Step 4: Simplify right side
    20,520,939.68x = 317,973,044,412,692.62
  5. Step 5: Solve for x
    x = 317,973,044,412,692.62/20,520,939.68
  6. Step 6: Final answer
    x = 15,495,052.83

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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.