Home / 13,610,016.70-20,415,025.05-12,121,981.90

Finding the Fourth Proportional to 13,610,016.70, 20,415,025.05 and 12,121,981.90

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Solution

The fourth proportional to 13,610,016.70, 20,415,025.05 and 12,121,981.90 is: 18,182,972.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610,016.70 : 20,415,025.05 = 12,121,981.90 : x
  2. Step 2: Convert to fraction form
    13,610,016.70/20,415,025.05 = 12,121,981.90/x
  3. Step 3: Cross multiply
    13,610,016.70x = 20,415,025.05 × 12,121,981.90
  4. Step 4: Simplify right side
    13,610,016.70x = 247,470,564,144,146.62
  5. Step 5: Solve for x
    x = 247,470,564,144,146.62/13,610,016.70
  6. Step 6: Final answer
    x = 18,182,972.85

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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.