Home / 13,439.26-18,545.70-7,471.18

Finding the Fourth Proportional to 13,439.26, 18,545.70 and 7,471.18

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Solution

The fourth proportional to 13,439.26, 18,545.70 and 7,471.18 is: 10,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.26 : 18,545.70 = 7,471.18 : x
  2. Step 2: Convert to fraction form
    13,439.26/18,545.70 = 7,471.18/x
  3. Step 3: Cross multiply
    13,439.26x = 18,545.70 × 7,471.18
  4. Step 4: Simplify right side
    13,439.26x = 138,558,262.93
  5. Step 5: Solve for x
    x = 138,558,262.93/13,439.26
  6. Step 6: Final answer
    x = 10,309.96

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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.