Home / 27,175.86-40,781.13-12,386.28

Finding the Fourth Proportional to 27,175.86, 40,781.13 and 12,386.28

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Solution

The fourth proportional to 27,175.86, 40,781.13 and 12,386.28 is: 18,587.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,175.86 : 40,781.13 = 12,386.28 : x
  2. Step 2: Convert to fraction form
    27,175.86/40,781.13 = 12,386.28/x
  3. Step 3: Cross multiply
    27,175.86x = 40,781.13 × 12,386.28
  4. Step 4: Simplify right side
    27,175.86x = 505,126,494.90
  5. Step 5: Solve for x
    x = 505,126,494.90/27,175.86
  6. Step 6: Final answer
    x = 18,587.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.