Home / 28,161.44-38,862.24-15,586.28

Finding the Fourth Proportional to 28,161.44, 38,862.24 and 15,586.28

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Solution

The fourth proportional to 28,161.44, 38,862.24 and 15,586.28 is: 21,508.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.44 : 38,862.24 = 15,586.28 : x
  2. Step 2: Convert to fraction form
    28,161.44/38,862.24 = 15,586.28/x
  3. Step 3: Cross multiply
    28,161.44x = 38,862.24 × 15,586.28
  4. Step 4: Simplify right side
    28,161.44x = 605,717,754.07
  5. Step 5: Solve for x
    x = 605,717,754.07/28,161.44
  6. Step 6: Final answer
    x = 21,508.76

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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.