Home / 12,819.27-17,685.64-9,470.13

Finding the Fourth Proportional to 12,819.27, 17,685.64 and 9,470.13

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Solution

The fourth proportional to 12,819.27, 17,685.64 and 9,470.13 is: 13,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.27 : 17,685.64 = 9,470.13 : x
  2. Step 2: Convert to fraction form
    12,819.27/17,685.64 = 9,470.13/x
  3. Step 3: Cross multiply
    12,819.27x = 17,685.64 × 9,470.13
  4. Step 4: Simplify right side
    12,819.27x = 167,485,309.93
  5. Step 5: Solve for x
    x = 167,485,309.93/12,819.27
  6. Step 6: Final answer
    x = 13,065.12

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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.