Home / 18,718,870.80-28,206,076.22-15,381,909.12

Finding the Fourth Proportional to 18,718,870.80, 28,206,076.22 and 15,381,909.12

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Solution

The fourth proportional to 18,718,870.80, 28,206,076.22 and 15,381,909.12 is: 23,177,856.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718,870.80 : 28,206,076.22 = 15,381,909.12 : x
  2. Step 2: Convert to fraction form
    18,718,870.80/28,206,076.22 = 15,381,909.12/x
  3. Step 3: Cross multiply
    18,718,870.80x = 28,206,076.22 × 15,381,909.12
  4. Step 4: Simplify right side
    18,718,870.80x = 433,863,301,047,833.06
  5. Step 5: Solve for x
    x = 433,863,301,047,833.06/18,718,870.80
  6. Step 6: Final answer
    x = 23,177,856.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.