Home / 22,718.08-31,348.80-12,781.44

Finding the Fourth Proportional to 22,718.08, 31,348.80 and 12,781.44

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Solution

The fourth proportional to 22,718.08, 31,348.80 and 12,781.44 is: 17,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,718.08 : 31,348.80 = 12,781.44 : x
  2. Step 2: Convert to fraction form
    22,718.08/31,348.80 = 12,781.44/x
  3. Step 3: Cross multiply
    22,718.08x = 31,348.80 × 12,781.44
  4. Step 4: Simplify right side
    22,718.08x = 400,682,806.27
  5. Step 5: Solve for x
    x = 400,682,806.27/22,718.08
  6. Step 6: Final answer
    x = 17,637.18

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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.