Home / 20,563,454.55-28,380,613-13,020,279.90

Finding the Fourth Proportional to 20,563,454.55, 28,380,613 and 13,020,279.90

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Solution

The fourth proportional to 20,563,454.55, 28,380,613 and 13,020,279.90 is: 17,969,914.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563,454.55 : 28,380,613 = 13,020,279.90 : x
  2. Step 2: Convert to fraction form
    20,563,454.55/28,380,613 = 13,020,279.90/x
  3. Step 3: Cross multiply
    20,563,454.55x = 28,380,613 × 13,020,279.90
  4. Step 4: Simplify right side
    20,563,454.55x = 369,523,524,993,578.69
  5. Step 5: Solve for x
    x = 369,523,524,993,578.69/20,563,454.55
  6. Step 6: Final answer
    x = 17,969,914.74

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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.