Home / 22,188.16-30,620.90-12,117.53

Finding the Fourth Proportional to 22,188.16, 30,620.90 and 12,117.53

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Solution

The fourth proportional to 22,188.16, 30,620.90 and 12,117.53 is: 16,722.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.16 : 30,620.90 = 12,117.53 : x
  2. Step 2: Convert to fraction form
    22,188.16/30,620.90 = 12,117.53/x
  3. Step 3: Cross multiply
    22,188.16x = 30,620.90 × 12,117.53
  4. Step 4: Simplify right side
    22,188.16x = 371,049,781.22
  5. Step 5: Solve for x
    x = 371,049,781.22/22,188.16
  6. Step 6: Final answer
    x = 16,722.87

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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.