Home / 28,948.77-43,420.20-19,648.55

Finding the Fourth Proportional to 28,948.77, 43,420.20 and 19,648.55

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Solution

The fourth proportional to 28,948.77, 43,420.20 and 19,648.55 is: 29,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,948.77 : 43,420.20 = 19,648.55 : x
  2. Step 2: Convert to fraction form
    28,948.77/43,420.20 = 19,648.55/x
  3. Step 3: Cross multiply
    28,948.77x = 43,420.20 × 19,648.55
  4. Step 4: Simplify right side
    28,948.77x = 853,143,753.61
  5. Step 5: Solve for x
    x = 853,143,753.61/28,948.77
  6. Step 6: Final answer
    x = 29,470.81

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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.