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Finding the Fourth Proportional to 13,862.71, 20,804.08 and 5,545.05

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Solution

The fourth proportional to 13,862.71, 20,804.08 and 5,545.05 is: 8,321.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.71 : 20,804.08 = 5,545.05 : x
  2. Step 2: Convert to fraction form
    13,862.71/20,804.08 = 5,545.05/x
  3. Step 3: Cross multiply
    13,862.71x = 20,804.08 × 5,545.05
  4. Step 4: Simplify right side
    13,862.71x = 115,359,663.80
  5. Step 5: Solve for x
    x = 115,359,663.80/13,862.71
  6. Step 6: Final answer
    x = 8,321.58

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1.5x scale

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.