Home / 31,545.87-43,533.23-18,118

Finding the Fourth Proportional to 31,545.87, 43,533.23 and 18,118

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Solution

The fourth proportional to 31,545.87, 43,533.23 and 18,118 is: 25,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,545.87 : 43,533.23 = 18,118 : x
  2. Step 2: Convert to fraction form
    31,545.87/43,533.23 = 18,118/x
  3. Step 3: Cross multiply
    31,545.87x = 43,533.23 × 18,118
  4. Step 4: Simplify right side
    31,545.87x = 788,735,061.14
  5. Step 5: Solve for x
    x = 788,735,061.14/31,545.87
  6. Step 6: Final answer
    x = 25,002.80

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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.