Home / 15,587.80-21,511.68-8,514.88

Finding the Fourth Proportional to 15,587.80, 21,511.68 and 8,514.88

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Solution

The fourth proportional to 15,587.80, 21,511.68 and 8,514.88 is: 11,750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.80 : 21,511.68 = 8,514.88 : x
  2. Step 2: Convert to fraction form
    15,587.80/21,511.68 = 8,514.88/x
  3. Step 3: Cross multiply
    15,587.80x = 21,511.68 × 8,514.88
  4. Step 4: Simplify right side
    15,587.80x = 183,169,373.80
  5. Step 5: Solve for x
    x = 183,169,373.80/15,587.80
  6. Step 6: Final answer
    x = 11,750.82

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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.