Home / 27,685.68-38,207.14-15,748.72

Finding the Fourth Proportional to 27,685.68, 38,207.14 and 15,748.72

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Solution

The fourth proportional to 27,685.68, 38,207.14 and 15,748.72 is: 21,733.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.68 : 38,207.14 = 15,748.72 : x
  2. Step 2: Convert to fraction form
    27,685.68/38,207.14 = 15,748.72/x
  3. Step 3: Cross multiply
    27,685.68x = 38,207.14 × 15,748.72
  4. Step 4: Simplify right side
    27,685.68x = 601,713,549.86
  5. Step 5: Solve for x
    x = 601,713,549.86/27,685.68
  6. Step 6: Final answer
    x = 21,733.75

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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.