Home / 15,431.41-21,294.09-8,717.63

Finding the Fourth Proportional to 15,431.41, 21,294.09 and 8,717.63

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Solution

The fourth proportional to 15,431.41, 21,294.09 and 8,717.63 is: 12,029.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.41 : 21,294.09 = 8,717.63 : x
  2. Step 2: Convert to fraction form
    15,431.41/21,294.09 = 8,717.63/x
  3. Step 3: Cross multiply
    15,431.41x = 21,294.09 × 8,717.63
  4. Step 4: Simplify right side
    15,431.41x = 185,633,891.34
  5. Step 5: Solve for x
    x = 185,633,891.34/15,431.41
  6. Step 6: Final answer
    x = 12,029.61

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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.