Home / 18,820,712.70-28,231,069.05-18,678,995.10

Finding the Fourth Proportional to 18,820,712.70, 28,231,069.05 and 18,678,995.10

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Solution

The fourth proportional to 18,820,712.70, 28,231,069.05 and 18,678,995.10 is: 28,018,492.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820,712.70 : 28,231,069.05 = 18,678,995.10 : x
  2. Step 2: Convert to fraction form
    18,820,712.70/28,231,069.05 = 18,678,995.10/x
  3. Step 3: Cross multiply
    18,820,712.70x = 28,231,069.05 × 18,678,995.10
  4. Step 4: Simplify right side
    18,820,712.70x = 527,328,000,452,711.69
  5. Step 5: Solve for x
    x = 527,328,000,452,711.69/18,820,712.70
  6. Step 6: Final answer
    x = 28,018,492.65

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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.