Home / 20,156,947.85-27,752,878.39-18,315,909.64

Finding the Fourth Proportional to 20,156,947.85, 27,752,878.39 and 18,315,909.64

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Solution

The fourth proportional to 20,156,947.85, 27,752,878.39 and 18,315,909.64 is: 25,218,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156,947.85 : 27,752,878.39 = 18,315,909.64 : x
  2. Step 2: Convert to fraction form
    20,156,947.85/27,752,878.39 = 18,315,909.64/x
  3. Step 3: Cross multiply
    20,156,947.85x = 27,752,878.39 × 18,315,909.64
  4. Step 4: Simplify right side
    20,156,947.85x = 508,319,212,890,144.50
  5. Step 5: Solve for x
    x = 508,319,212,890,144.50/20,156,947.85
  6. Step 6: Final answer
    x = 25,218,064.60

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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.