Home / 28,719.74-39,634.43-15,972.86

Finding the Fourth Proportional to 28,719.74, 39,634.43 and 15,972.86

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Solution

The fourth proportional to 28,719.74, 39,634.43 and 15,972.86 is: 22,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.74 : 39,634.43 = 15,972.86 : x
  2. Step 2: Convert to fraction form
    28,719.74/39,634.43 = 15,972.86/x
  3. Step 3: Cross multiply
    28,719.74x = 39,634.43 × 15,972.86
  4. Step 4: Simplify right side
    28,719.74x = 633,074,923.53
  5. Step 5: Solve for x
    x = 633,074,923.53/28,719.74
  6. Step 6: Final answer
    x = 22,043.20

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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.