Home / 22,210.95-30,651.60-12,139.39

Finding the Fourth Proportional to 22,210.95, 30,651.60 and 12,139.39

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Solution

The fourth proportional to 22,210.95, 30,651.60 and 12,139.39 is: 16,752.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,210.95 : 30,651.60 = 12,139.39 : x
  2. Step 2: Convert to fraction form
    22,210.95/30,651.60 = 12,139.39/x
  3. Step 3: Cross multiply
    22,210.95x = 30,651.60 × 12,139.39
  4. Step 4: Simplify right side
    22,210.95x = 372,091,770.47
  5. Step 5: Solve for x
    x = 372,091,770.47/22,210.95
  6. Step 6: Final answer
    x = 16,752.63

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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.