Home / 22,140.12-30,550.08-13,187.40

Finding the Fourth Proportional to 22,140.12, 30,550.08 and 13,187.40

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Solution

The fourth proportional to 22,140.12, 30,550.08 and 13,187.40 is: 18,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,140.12 : 30,550.08 = 13,187.40 : x
  2. Step 2: Convert to fraction form
    22,140.12/30,550.08 = 13,187.40/x
  3. Step 3: Cross multiply
    22,140.12x = 30,550.08 × 13,187.40
  4. Step 4: Simplify right side
    22,140.12x = 402,876,124.99
  5. Step 5: Solve for x
    x = 402,876,124.99/22,140.12
  6. Step 6: Final answer
    x = 18,196.65

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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.