Home / 22,188.60-30,619.13-12,115.10

Finding the Fourth Proportional to 22,188.60, 30,619.13 and 12,115.10

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Solution

The fourth proportional to 22,188.60, 30,619.13 and 12,115.10 is: 16,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.60 : 30,619.13 = 12,115.10 : x
  2. Step 2: Convert to fraction form
    22,188.60/30,619.13 = 12,115.10/x
  3. Step 3: Cross multiply
    22,188.60x = 30,619.13 × 12,115.10
  4. Step 4: Simplify right side
    22,188.60x = 370,953,684.74
  5. Step 5: Solve for x
    x = 370,953,684.74/22,188.60
  6. Step 6: Final answer
    x = 16,718.21

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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.