Home / 15,587.77-21,511.09-8,514.19

Finding the Fourth Proportional to 15,587.77, 21,511.09 and 8,514.19

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Solution

The fourth proportional to 15,587.77, 21,511.09 and 8,514.19 is: 11,749.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.77 : 21,511.09 = 8,514.19 : x
  2. Step 2: Convert to fraction form
    15,587.77/21,511.09 = 8,514.19/x
  3. Step 3: Cross multiply
    15,587.77x = 21,511.09 × 8,514.19
  4. Step 4: Simplify right side
    15,587.77x = 183,149,508.34
  5. Step 5: Solve for x
    x = 183,149,508.34/15,587.77
  6. Step 6: Final answer
    x = 11,749.57

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Half scale
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Double scale
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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.