Home / 11,514.08-15,888.30-6,478.19

Finding the Fourth Proportional to 11,514.08, 15,888.30 and 6,478.19

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Solution

The fourth proportional to 11,514.08, 15,888.30 and 6,478.19 is: 8,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.08 : 15,888.30 = 6,478.19 : x
  2. Step 2: Convert to fraction form
    11,514.08/15,888.30 = 6,478.19/x
  3. Step 3: Cross multiply
    11,514.08x = 15,888.30 × 6,478.19
  4. Step 4: Simplify right side
    11,514.08x = 102,927,426.18
  5. Step 5: Solve for x
    x = 102,927,426.18/11,514.08
  6. Step 6: Final answer
    x = 8,939.27

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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.