Home / 30,806.08-42,514.32-17,375.92

Finding the Fourth Proportional to 30,806.08, 42,514.32 and 17,375.92

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Solution

The fourth proportional to 30,806.08, 42,514.32 and 17,375.92 is: 23,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,806.08 : 42,514.32 = 17,375.92 : x
  2. Step 2: Convert to fraction form
    30,806.08/42,514.32 = 17,375.92/x
  3. Step 3: Cross multiply
    30,806.08x = 42,514.32 × 17,375.92
  4. Step 4: Simplify right side
    30,806.08x = 738,725,423.17
  5. Step 5: Solve for x
    x = 738,725,423.17/30,806.08
  6. Step 6: Final answer
    x = 23,979.86

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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.