Home / 15,463.27-21,339.38-8,389.69

Finding the Fourth Proportional to 15,463.27, 21,339.38 and 8,389.69

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Solution

The fourth proportional to 15,463.27, 21,339.38 and 8,389.69 is: 11,577.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,463.27 : 21,339.38 = 8,389.69 : x
  2. Step 2: Convert to fraction form
    15,463.27/21,339.38 = 8,389.69/x
  3. Step 3: Cross multiply
    15,463.27x = 21,339.38 × 8,389.69
  4. Step 4: Simplify right side
    15,463.27x = 179,030,750.62
  5. Step 5: Solve for x
    x = 179,030,750.62/15,463.27
  6. Step 6: Final answer
    x = 11,577.81

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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.