Home / 27,718.12-38,251-15,142.88

Finding the Fourth Proportional to 27,718.12, 38,251 and 15,142.88

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Solution

The fourth proportional to 27,718.12, 38,251 and 15,142.88 is: 20,897.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.12 : 38,251 = 15,142.88 : x
  2. Step 2: Convert to fraction form
    27,718.12/38,251 = 15,142.88/x
  3. Step 3: Cross multiply
    27,718.12x = 38,251 × 15,142.88
  4. Step 4: Simplify right side
    27,718.12x = 579,230,302.88
  5. Step 5: Solve for x
    x = 579,230,302.88/27,718.12
  6. Step 6: Final answer
    x = 20,897.17

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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.