Home / 22,210.74-30,650.30-12,139.20

Finding the Fourth Proportional to 22,210.74, 30,650.30 and 12,139.20

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Solution

The fourth proportional to 22,210.74, 30,650.30 and 12,139.20 is: 16,751.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,210.74 : 30,650.30 = 12,139.20 : x
  2. Step 2: Convert to fraction form
    22,210.74/30,650.30 = 12,139.20/x
  3. Step 3: Cross multiply
    22,210.74x = 30,650.30 × 12,139.20
  4. Step 4: Simplify right side
    22,210.74x = 372,070,121.76
  5. Step 5: Solve for x
    x = 372,070,121.76/22,210.74
  6. Step 6: Final answer
    x = 16,751.81

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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.