Home / 25,543.92-38,312.64-18,979.68

Finding the Fourth Proportional to 25,543.92, 38,312.64 and 18,979.68

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Solution

The fourth proportional to 25,543.92, 38,312.64 and 18,979.68 is: 28,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,543.92 : 38,312.64 = 18,979.68 : x
  2. Step 2: Convert to fraction form
    25,543.92/38,312.64 = 18,979.68/x
  3. Step 3: Cross multiply
    25,543.92x = 38,312.64 × 18,979.68
  4. Step 4: Simplify right side
    25,543.92x = 727,161,647.16
  5. Step 5: Solve for x
    x = 727,161,647.16/25,543.92
  6. Step 6: Final answer
    x = 28,467.11

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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.