Home / 13,799,209.40-20,736,138.90-12,156,918.20

Finding the Fourth Proportional to 13,799,209.40, 20,736,138.90 and 12,156,918.20

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Solution

The fourth proportional to 13,799,209.40, 20,736,138.90 and 12,156,918.20 is: 18,268,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799,209.40 : 20,736,138.90 = 12,156,918.20 : x
  2. Step 2: Convert to fraction form
    13,799,209.40/20,736,138.90 = 12,156,918.20/x
  3. Step 3: Cross multiply
    13,799,209.40x = 20,736,138.90 × 12,156,918.20
  4. Step 4: Simplify right side
    13,799,209.40x = 252,087,544,391,137.94
  5. Step 5: Solve for x
    x = 252,087,544,391,137.94/13,799,209.40
  6. Step 6: Final answer
    x = 18,268,259.95

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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.