Home / 20,347,329.70-30,520,994.55-18,788,436.10

Finding the Fourth Proportional to 20,347,329.70, 30,520,994.55 and 18,788,436.10

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Solution

The fourth proportional to 20,347,329.70, 30,520,994.55 and 18,788,436.10 is: 28,182,654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347,329.70 : 30,520,994.55 = 18,788,436.10 : x
  2. Step 2: Convert to fraction form
    20,347,329.70/30,520,994.55 = 18,788,436.10/x
  3. Step 3: Cross multiply
    20,347,329.70x = 30,520,994.55 × 18,788,436.10
  4. Step 4: Simplify right side
    20,347,329.70x = 573,441,755,811,123.38
  5. Step 5: Solve for x
    x = 573,441,755,811,123.38/20,347,329.70
  6. Step 6: Final answer
    x = 28,182,654.15

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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.