Home / 20,722,729.60-31,084,094.40-13,127,132.80

Finding the Fourth Proportional to 20,722,729.60, 31,084,094.40 and 13,127,132.80

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Solution

The fourth proportional to 20,722,729.60, 31,084,094.40 and 13,127,132.80 is: 19,690,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,729.60 : 31,084,094.40 = 13,127,132.80 : x
  2. Step 2: Convert to fraction form
    20,722,729.60/31,084,094.40 = 13,127,132.80/x
  3. Step 3: Cross multiply
    20,722,729.60x = 31,084,094.40 × 13,127,132.80
  4. Step 4: Simplify right side
    20,722,729.60x = 408,045,035,156,536.31
  5. Step 5: Solve for x
    x = 408,045,035,156,536.31/20,722,729.60
  6. Step 6: Final answer
    x = 19,690,699.20

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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.