Home / 12,370.68-17,071.76-6,781.32

Finding the Fourth Proportional to 12,370.68, 17,071.76 and 6,781.32

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Solution

The fourth proportional to 12,370.68, 17,071.76 and 6,781.32 is: 9,358.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,370.68 : 17,071.76 = 6,781.32 : x
  2. Step 2: Convert to fraction form
    12,370.68/17,071.76 = 6,781.32/x
  3. Step 3: Cross multiply
    12,370.68x = 17,071.76 × 6,781.32
  4. Step 4: Simplify right side
    12,370.68x = 115,769,067.52
  5. Step 5: Solve for x
    x = 115,769,067.52/12,370.68
  6. Step 6: Final answer
    x = 9,358.34

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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.