Home / 28,079.33-38,718-19,132.07

Finding the Fourth Proportional to 28,079.33, 38,718 and 19,132.07

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Solution

The fourth proportional to 28,079.33, 38,718 and 19,132.07 is: 26,380.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.33 : 38,718 = 19,132.07 : x
  2. Step 2: Convert to fraction form
    28,079.33/38,718 = 19,132.07/x
  3. Step 3: Cross multiply
    28,079.33x = 38,718 × 19,132.07
  4. Step 4: Simplify right side
    28,079.33x = 740,755,292.67
  5. Step 5: Solve for x
    x = 740,755,292.67/28,079.33
  6. Step 6: Final answer
    x = 26,380.81

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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.