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Finding the Fourth Proportional to 27,149.51, 40,721.77 and 9,378.55

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Solution

The fourth proportional to 27,149.51, 40,721.77 and 9,378.55 is: 14,066.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,149.51 : 40,721.77 = 9,378.55 : x
  2. Step 2: Convert to fraction form
    27,149.51/40,721.77 = 9,378.55/x
  3. Step 3: Cross multiply
    27,149.51x = 40,721.77 × 9,378.55
  4. Step 4: Simplify right side
    27,149.51x = 381,911,218.66
  5. Step 5: Solve for x
    x = 381,911,218.66/27,149.51
  6. Step 6: Final answer
    x = 14,066.96

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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.