Home / 20,743,951.20-31,139,546.40-12,229,085.40

Finding the Fourth Proportional to 20,743,951.20, 31,139,546.40 and 12,229,085.40

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Solution

The fourth proportional to 20,743,951.20, 31,139,546.40 and 12,229,085.40 is: 18,357,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743,951.20 : 31,139,546.40 = 12,229,085.40 : x
  2. Step 2: Convert to fraction form
    20,743,951.20/31,139,546.40 = 12,229,085.40/x
  3. Step 3: Cross multiply
    20,743,951.20x = 31,139,546.40 × 12,229,085.40
  4. Step 4: Simplify right side
    20,743,951.20x = 380,808,172,242,862.56
  5. Step 5: Solve for x
    x = 380,808,172,242,862.56/20,743,951.20
  6. Step 6: Final answer
    x = 18,357,552.45

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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.