Home / 18,715,246.40-28,025,630.40-12,290,715.20

Finding the Fourth Proportional to 18,715,246.40, 28,025,630.40 and 12,290,715.20

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Solution

The fourth proportional to 18,715,246.40, 28,025,630.40 and 12,290,715.20 is: 18,405,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,246.40 : 28,025,630.40 = 12,290,715.20 : x
  2. Step 2: Convert to fraction form
    18,715,246.40/28,025,630.40 = 12,290,715.20/x
  3. Step 3: Cross multiply
    18,715,246.40x = 28,025,630.40 × 12,290,715.20
  4. Step 4: Simplify right side
    18,715,246.40x = 344,455,041,546,862.06
  5. Step 5: Solve for x
    x = 344,455,041,546,862.06/18,715,246.40
  6. Step 6: Final answer
    x = 18,405,049.78

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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.