Home / 15,587.88-21,511.35-8,514.42

Finding the Fourth Proportional to 15,587.88, 21,511.35 and 8,514.42

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Solution

The fourth proportional to 15,587.88, 21,511.35 and 8,514.42 is: 11,749.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.88 : 21,511.35 = 8,514.42 : x
  2. Step 2: Convert to fraction form
    15,587.88/21,511.35 = 8,514.42/x
  3. Step 3: Cross multiply
    15,587.88x = 21,511.35 × 8,514.42
  4. Step 4: Simplify right side
    15,587.88x = 183,156,668.67
  5. Step 5: Solve for x
    x = 183,156,668.67/15,587.88
  6. Step 6: Final answer
    x = 11,749.94

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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.