Home / 22,210.91-30,651.77-12,139.13

Finding the Fourth Proportional to 22,210.91, 30,651.77 and 12,139.13

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Solution

The fourth proportional to 22,210.91, 30,651.77 and 12,139.13 is: 16,752.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,210.91 : 30,651.77 = 12,139.13 : x
  2. Step 2: Convert to fraction form
    22,210.91/30,651.77 = 12,139.13/x
  3. Step 3: Cross multiply
    22,210.91x = 30,651.77 × 12,139.13
  4. Step 4: Simplify right side
    22,210.91x = 372,085,760.06
  5. Step 5: Solve for x
    x = 372,085,760.06/22,210.91
  6. Step 6: Final answer
    x = 16,752.39

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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.