Home / 13,799,128.40-20,736,017.40-12,156,837.20

Finding the Fourth Proportional to 13,799,128.40, 20,736,017.40 and 12,156,837.20

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Solution

The fourth proportional to 13,799,128.40, 20,736,017.40 and 12,156,837.20 is: 18,268,138.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799,128.40 : 20,736,017.40 = 12,156,837.20 : x
  2. Step 2: Convert to fraction form
    13,799,128.40/20,736,017.40 = 12,156,837.20/x
  3. Step 3: Cross multiply
    13,799,128.40x = 20,736,017.40 × 12,156,837.20
  4. Step 4: Simplify right side
    13,799,128.40x = 252,084,387,708,167.25
  5. Step 5: Solve for x
    x = 252,084,387,708,167.25/13,799,128.40
  6. Step 6: Final answer
    x = 18,268,138.42

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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.