Home / 15,417.19-21,275.76-8,343.69

Finding the Fourth Proportional to 15,417.19, 21,275.76 and 8,343.69

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Solution

The fourth proportional to 15,417.19, 21,275.76 and 8,343.69 is: 11,514.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.19 : 21,275.76 = 8,343.69 : x
  2. Step 2: Convert to fraction form
    15,417.19/21,275.76 = 8,343.69/x
  3. Step 3: Cross multiply
    15,417.19x = 21,275.76 × 8,343.69
  4. Step 4: Simplify right side
    15,417.19x = 177,518,345.95
  5. Step 5: Solve for x
    x = 177,518,345.95/15,417.19
  6. Step 6: Final answer
    x = 11,514.31

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Half scale
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Double scale
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Similar ratio
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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.