Home / 20,385,697.50-28,132,267.12-11,218,340.24

Finding the Fourth Proportional to 20,385,697.50, 28,132,267.12 and 11,218,340.24

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Solution

The fourth proportional to 20,385,697.50, 28,132,267.12 and 11,218,340.24 is: 15,481,312.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385,697.50 : 28,132,267.12 = 11,218,340.24 : x
  2. Step 2: Convert to fraction form
    20,385,697.50/28,132,267.12 = 11,218,340.24/x
  3. Step 3: Cross multiply
    20,385,697.50x = 28,132,267.12 × 11,218,340.24
  4. Step 4: Simplify right side
    20,385,697.50x = 315,597,344,274,724.94
  5. Step 5: Solve for x
    x = 315,597,344,274,724.94/20,385,697.50
  6. Step 6: Final answer
    x = 15,481,312.05

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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.