Home / 31,545.18-43,532.03-18,120.65

Finding the Fourth Proportional to 31,545.18, 43,532.03 and 18,120.65

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Solution

The fourth proportional to 31,545.18, 43,532.03 and 18,120.65 is: 25,006.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,545.18 : 43,532.03 = 18,120.65 : x
  2. Step 2: Convert to fraction form
    31,545.18/43,532.03 = 18,120.65/x
  3. Step 3: Cross multiply
    31,545.18x = 43,532.03 × 18,120.65
  4. Step 4: Simplify right side
    31,545.18x = 788,828,507.06
  5. Step 5: Solve for x
    x = 788,828,507.06/31,545.18
  6. Step 6: Final answer
    x = 25,006.31

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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.