Home / 20,722,742.60-31,084,113.90-13,127,145.80

Finding the Fourth Proportional to 20,722,742.60, 31,084,113.90 and 13,127,145.80

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Solution

The fourth proportional to 20,722,742.60, 31,084,113.90 and 13,127,145.80 is: 19,690,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,742.60 : 31,084,113.90 = 13,127,145.80 : x
  2. Step 2: Convert to fraction form
    20,722,742.60/31,084,113.90 = 13,127,145.80/x
  3. Step 3: Cross multiply
    20,722,742.60x = 31,084,113.90 × 13,127,145.80
  4. Step 4: Simplify right side
    20,722,742.60x = 408,045,695,229,106.62
  5. Step 5: Solve for x
    x = 408,045,695,229,106.62/20,722,742.60
  6. Step 6: Final answer
    x = 19,690,718.70

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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.