Home / 20,505,909.70-30,758,864.55-20,187,045.10

Finding the Fourth Proportional to 20,505,909.70, 30,758,864.55 and 20,187,045.10

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Solution

The fourth proportional to 20,505,909.70, 30,758,864.55 and 20,187,045.10 is: 30,280,567.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505,909.70 : 30,758,864.55 = 20,187,045.10 : x
  2. Step 2: Convert to fraction form
    20,505,909.70/30,758,864.55 = 20,187,045.10/x
  3. Step 3: Cross multiply
    20,505,909.70x = 30,758,864.55 × 20,187,045.10
  4. Step 4: Simplify right side
    20,505,909.70x = 620,930,585,895,641.25
  5. Step 5: Solve for x
    x = 620,930,585,895,641.25/20,505,909.70
  6. Step 6: Final answer
    x = 30,280,567.65

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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.