Home / 13,191,990.32-18,206,869.92-7,391,164.88

Finding the Fourth Proportional to 13,191,990.32, 18,206,869.92 and 7,391,164.88

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Solution

The fourth proportional to 13,191,990.32, 18,206,869.92 and 7,391,164.88 is: 10,200,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191,990.32 : 18,206,869.92 = 7,391,164.88 : x
  2. Step 2: Convert to fraction form
    13,191,990.32/18,206,869.92 = 7,391,164.88/x
  3. Step 3: Cross multiply
    13,191,990.32x = 18,206,869.92 × 7,391,164.88
  4. Step 4: Simplify right side
    13,191,990.32x = 134,569,977,527,432.42
  5. Step 5: Solve for x
    x = 134,569,977,527,432.42/13,191,990.32
  6. Step 6: Final answer
    x = 10,200,885.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.