Home / 27,718.61-38,251.71-15,143.36

Finding the Fourth Proportional to 27,718.61, 38,251.71 and 15,143.36

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Solution

The fourth proportional to 27,718.61, 38,251.71 and 15,143.36 is: 20,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.61 : 38,251.71 = 15,143.36 : x
  2. Step 2: Convert to fraction form
    27,718.61/38,251.71 = 15,143.36/x
  3. Step 3: Cross multiply
    27,718.61x = 38,251.71 × 15,143.36
  4. Step 4: Simplify right side
    27,718.61x = 579,259,223.89
  5. Step 5: Solve for x
    x = 579,259,223.89/27,718.61
  6. Step 6: Final answer
    x = 20,897.85

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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.