Home / 15,823.41-21,837.30-9,108.90

Finding the Fourth Proportional to 15,823.41, 21,837.30 and 9,108.90

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Solution

The fourth proportional to 15,823.41, 21,837.30 and 9,108.90 is: 12,570.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.41 : 21,837.30 = 9,108.90 : x
  2. Step 2: Convert to fraction form
    15,823.41/21,837.30 = 9,108.90/x
  3. Step 3: Cross multiply
    15,823.41x = 21,837.30 × 9,108.90
  4. Step 4: Simplify right side
    15,823.41x = 198,913,781.97
  5. Step 5: Solve for x
    x = 198,913,781.97/15,823.41
  6. Step 6: Final answer
    x = 12,570.85

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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.