Home / 18,916.02-28,370.76-5,061.78

Finding the Fourth Proportional to 18,916.02, 28,370.76 and 5,061.78

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Solution

The fourth proportional to 18,916.02, 28,370.76 and 5,061.78 is: 7,591.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.02 : 28,370.76 = 5,061.78 : x
  2. Step 2: Convert to fraction form
    18,916.02/28,370.76 = 5,061.78/x
  3. Step 3: Cross multiply
    18,916.02x = 28,370.76 × 5,061.78
  4. Step 4: Simplify right side
    18,916.02x = 143,606,545.55
  5. Step 5: Solve for x
    x = 143,606,545.55/18,916.02
  6. Step 6: Final answer
    x = 7,591.79

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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.