Home / 18,678,836.10-28,018,254.15-15,490,190.10

Finding the Fourth Proportional to 18,678,836.10, 28,018,254.15 and 15,490,190.10

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Solution

The fourth proportional to 18,678,836.10, 28,018,254.15 and 15,490,190.10 is: 23,235,285.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,836.10 : 28,018,254.15 = 15,490,190.10 : x
  2. Step 2: Convert to fraction form
    18,678,836.10/28,018,254.15 = 15,490,190.10/x
  3. Step 3: Cross multiply
    18,678,836.10x = 28,018,254.15 × 15,490,190.10
  4. Step 4: Simplify right side
    18,678,836.10x = 434,008,083,053,613.88
  5. Step 5: Solve for x
    x = 434,008,083,053,613.88/18,678,836.10
  6. Step 6: Final answer
    x = 23,235,285.15

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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.