Home / 15,587.85-21,511.23-8,514.29

Finding the Fourth Proportional to 15,587.85, 21,511.23 and 8,514.29

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Solution

The fourth proportional to 15,587.85, 21,511.23 and 8,514.29 is: 11,749.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.85 : 21,511.23 = 8,514.29 : x
  2. Step 2: Convert to fraction form
    15,587.85/21,511.23 = 8,514.29/x
  3. Step 3: Cross multiply
    15,587.85x = 21,511.23 × 8,514.29
  4. Step 4: Simplify right side
    15,587.85x = 183,152,700.35
  5. Step 5: Solve for x
    x = 183,152,700.35/15,587.85
  6. Step 6: Final answer
    x = 11,749.71

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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.