Home / 22,182.75-30,612.20-15,121.53

Finding the Fourth Proportional to 22,182.75, 30,612.20 and 15,121.53

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Solution

The fourth proportional to 22,182.75, 30,612.20 and 15,121.53 is: 20,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,182.75 : 30,612.20 = 15,121.53 : x
  2. Step 2: Convert to fraction form
    22,182.75/30,612.20 = 15,121.53/x
  3. Step 3: Cross multiply
    22,182.75x = 30,612.20 × 15,121.53
  4. Step 4: Simplify right side
    22,182.75x = 462,903,225.06
  5. Step 5: Solve for x
    x = 462,903,225.06/22,182.75
  6. Step 6: Final answer
    x = 20,867.71

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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.