Home / 15,496.25-21,382.18-8,780.49

Finding the Fourth Proportional to 15,496.25, 21,382.18 and 8,780.49

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Solution

The fourth proportional to 15,496.25, 21,382.18 and 8,780.49 is: 12,115.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.25 : 21,382.18 = 8,780.49 : x
  2. Step 2: Convert to fraction form
    15,496.25/21,382.18 = 8,780.49/x
  3. Step 3: Cross multiply
    15,496.25x = 21,382.18 × 8,780.49
  4. Step 4: Simplify right side
    15,496.25x = 187,746,017.67
  5. Step 5: Solve for x
    x = 187,746,017.67/15,496.25
  6. Step 6: Final answer
    x = 12,115.58

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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.