Home / 18,781,348.70-28,172,023.05-18,529,406.30

Finding the Fourth Proportional to 18,781,348.70, 28,172,023.05 and 18,529,406.30

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Solution

The fourth proportional to 18,781,348.70, 28,172,023.05 and 18,529,406.30 is: 27,794,109.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781,348.70 : 28,172,023.05 = 18,529,406.30 : x
  2. Step 2: Convert to fraction form
    18,781,348.70/28,172,023.05 = 18,529,406.30/x
  3. Step 3: Cross multiply
    18,781,348.70x = 28,172,023.05 × 18,529,406.30
  4. Step 4: Simplify right side
    18,781,348.70x = 522,010,861,386,415.25
  5. Step 5: Solve for x
    x = 522,010,861,386,415.25/18,781,348.70
  6. Step 6: Final answer
    x = 27,794,109.45

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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.