Home / 20,386,471.80-28,133,335.68-11,219,114.55

Finding the Fourth Proportional to 20,386,471.80, 28,133,335.68 and 11,219,114.55

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Solution

The fourth proportional to 20,386,471.80, 28,133,335.68 and 11,219,114.55 is: 15,482,380.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,471.80 : 28,133,335.68 = 11,219,114.55 : x
  2. Step 2: Convert to fraction form
    20,386,471.80/28,133,335.68 = 11,219,114.55/x
  3. Step 3: Cross multiply
    20,386,471.80x = 28,133,335.68 × 11,219,114.55
  4. Step 4: Simplify right side
    20,386,471.80x = 315,631,115,667,522.19
  5. Step 5: Solve for x
    x = 315,631,115,667,522.19/20,386,471.80
  6. Step 6: Final answer
    x = 15,482,380.61

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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.