Home / 21,101,141.60-31,651,712.40-12,598,085.60

Finding the Fourth Proportional to 21,101,141.60, 31,651,712.40 and 12,598,085.60

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Solution

The fourth proportional to 21,101,141.60, 31,651,712.40 and 12,598,085.60 is: 18,897,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101,141.60 : 31,651,712.40 = 12,598,085.60 : x
  2. Step 2: Convert to fraction form
    21,101,141.60/31,651,712.40 = 12,598,085.60/x
  3. Step 3: Cross multiply
    21,101,141.60x = 31,651,712.40 × 12,598,085.60
  4. Step 4: Simplify right side
    21,101,141.60x = 398,750,982,201,781.44
  5. Step 5: Solve for x
    x = 398,750,982,201,781.44/21,101,141.60
  6. Step 6: Final answer
    x = 18,897,128.40

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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.