Home / 22,199.64-30,635.76-12,128.20

Finding the Fourth Proportional to 22,199.64, 30,635.76 and 12,128.20

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Solution

The fourth proportional to 22,199.64, 30,635.76 and 12,128.20 is: 16,737.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,199.64 : 30,635.76 = 12,128.20 : x
  2. Step 2: Convert to fraction form
    22,199.64/30,635.76 = 12,128.20/x
  3. Step 3: Cross multiply
    22,199.64x = 30,635.76 × 12,128.20
  4. Step 4: Simplify right side
    22,199.64x = 371,556,624.43
  5. Step 5: Solve for x
    x = 371,556,624.43/22,199.64
  6. Step 6: Final answer
    x = 16,737.06

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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.