Home / 20,834,654.40-31,202,215.20-12,772,497.60

Finding the Fourth Proportional to 20,834,654.40, 31,202,215.20 and 12,772,497.60

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Solution

The fourth proportional to 20,834,654.40, 31,202,215.20 and 12,772,497.60 is: 19,128,237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834,654.40 : 31,202,215.20 = 12,772,497.60 : x
  2. Step 2: Convert to fraction form
    20,834,654.40/31,202,215.20 = 12,772,497.60/x
  3. Step 3: Cross multiply
    20,834,654.40x = 31,202,215.20 × 12,772,497.60
  4. Step 4: Simplify right side
    20,834,654.40x = 398,530,218,756,683.50
  5. Step 5: Solve for x
    x = 398,530,218,756,683.50/20,834,654.40
  6. Step 6: Final answer
    x = 19,128,237.56

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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.