Home / 18,718,858.46-28,206,057.64-15,381,896.88

Finding the Fourth Proportional to 18,718,858.46, 28,206,057.64 and 15,381,896.88

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Solution

The fourth proportional to 18,718,858.46, 28,206,057.64 and 15,381,896.88 is: 23,177,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718,858.46 : 28,206,057.64 = 15,381,896.88 : x
  2. Step 2: Convert to fraction form
    18,718,858.46/28,206,057.64 = 15,381,896.88/x
  3. Step 3: Cross multiply
    18,718,858.46x = 28,206,057.64 × 15,381,896.88
  4. Step 4: Simplify right side
    18,718,858.46x = 433,862,670,009,816.19
  5. Step 5: Solve for x
    x = 433,862,670,009,816.19/18,718,858.46
  6. Step 6: Final answer
    x = 23,177,838.06

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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.