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Finding the Fourth Proportional to 18,505.34, 25,539.81 and 10,545.74

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Solution

The fourth proportional to 18,505.34, 25,539.81 and 10,545.74 is: 14,554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.34 : 25,539.81 = 10,545.74 : x
  2. Step 2: Convert to fraction form
    18,505.34/25,539.81 = 10,545.74/x
  3. Step 3: Cross multiply
    18,505.34x = 25,539.81 × 10,545.74
  4. Step 4: Simplify right side
    18,505.34x = 269,336,220.21
  5. Step 5: Solve for x
    x = 269,336,220.21/18,505.34
  6. Step 6: Final answer
    x = 14,554.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.