Home / 27,755.76-38,301.35-15,820.22

Finding the Fourth Proportional to 27,755.76, 38,301.35 and 15,820.22

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Solution

The fourth proportional to 27,755.76, 38,301.35 and 15,820.22 is: 21,830.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,755.76 : 38,301.35 = 15,820.22 : x
  2. Step 2: Convert to fraction form
    27,755.76/38,301.35 = 15,820.22/x
  3. Step 3: Cross multiply
    27,755.76x = 38,301.35 × 15,820.22
  4. Step 4: Simplify right side
    27,755.76x = 605,935,512.69
  5. Step 5: Solve for x
    x = 605,935,512.69/27,755.76
  6. Step 6: Final answer
    x = 21,830.98

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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.