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Finding the Fourth Proportional to 17,386,469.80, 26,079,704.70 and 15,818,828.20

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Solution

The fourth proportional to 17,386,469.80, 26,079,704.70 and 15,818,828.20 is: 23,728,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,386,469.80 : 26,079,704.70 = 15,818,828.20 : x
  2. Step 2: Convert to fraction form
    17,386,469.80/26,079,704.70 = 15,818,828.20/x
  3. Step 3: Cross multiply
    17,386,469.80x = 26,079,704.70 × 15,818,828.20
  4. Step 4: Simplify right side
    17,386,469.80x = 412,550,368,156,032.50
  5. Step 5: Solve for x
    x = 412,550,368,156,032.50/17,386,469.80
  6. Step 6: Final answer
    x = 23,728,242.30

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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.