Home / 20,386,056.42-28,132,761.84-11,218,699.20

Finding the Fourth Proportional to 20,386,056.42, 28,132,761.84 and 11,218,699.20

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Solution

The fourth proportional to 20,386,056.42, 28,132,761.84 and 11,218,699.20 is: 15,481,807.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,056.42 : 28,132,761.84 = 11,218,699.20 : x
  2. Step 2: Convert to fraction form
    20,386,056.42/28,132,761.84 = 11,218,699.20/x
  3. Step 3: Cross multiply
    20,386,056.42x = 28,132,761.84 × 11,218,699.20
  4. Step 4: Simplify right side
    20,386,056.42x = 315,612,992,748,198.50
  5. Step 5: Solve for x
    x = 315,612,992,748,198.50/20,386,056.42
  6. Step 6: Final answer
    x = 15,481,807.09

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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.