Home / 27,859.86-38,446.60-15,760.08

Finding the Fourth Proportional to 27,859.86, 38,446.60 and 15,760.08

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Solution

The fourth proportional to 27,859.86, 38,446.60 and 15,760.08 is: 21,748.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,859.86 : 38,446.60 = 15,760.08 : x
  2. Step 2: Convert to fraction form
    27,859.86/38,446.60 = 15,760.08/x
  3. Step 3: Cross multiply
    27,859.86x = 38,446.60 × 15,760.08
  4. Step 4: Simplify right side
    27,859.86x = 605,921,220.69
  5. Step 5: Solve for x
    x = 605,921,220.69/27,859.86
  6. Step 6: Final answer
    x = 21,748.90

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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.