Home / 15,538.92-21,443.85-9,165.66

Finding the Fourth Proportional to 15,538.92, 21,443.85 and 9,165.66

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Solution

The fourth proportional to 15,538.92, 21,443.85 and 9,165.66 is: 12,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.92 : 21,443.85 = 9,165.66 : x
  2. Step 2: Convert to fraction form
    15,538.92/21,443.85 = 9,165.66/x
  3. Step 3: Cross multiply
    15,538.92x = 21,443.85 × 9,165.66
  4. Step 4: Simplify right side
    15,538.92x = 196,547,038.19
  5. Step 5: Solve for x
    x = 196,547,038.19/15,538.92
  6. Step 6: Final answer
    x = 12,648.69

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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.