Home / 22,210.11-30,650.76-12,139.22

Finding the Fourth Proportional to 22,210.11, 30,650.76 and 12,139.22

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Solution

The fourth proportional to 22,210.11, 30,650.76 and 12,139.22 is: 16,752.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,210.11 : 30,650.76 = 12,139.22 : x
  2. Step 2: Convert to fraction form
    22,210.11/30,650.76 = 12,139.22/x
  3. Step 3: Cross multiply
    22,210.11x = 30,650.76 × 12,139.22
  4. Step 4: Simplify right side
    22,210.11x = 372,076,165.55
  5. Step 5: Solve for x
    x = 372,076,165.55/22,210.11
  6. Step 6: Final answer
    x = 16,752.56

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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.