Home / 28,057.28-38,717.88-15,481.76

Finding the Fourth Proportional to 28,057.28, 38,717.88 and 15,481.76

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Solution

The fourth proportional to 28,057.28, 38,717.88 and 15,481.76 is: 21,364.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.28 : 38,717.88 = 15,481.76 : x
  2. Step 2: Convert to fraction form
    28,057.28/38,717.88 = 15,481.76/x
  3. Step 3: Cross multiply
    28,057.28x = 38,717.88 × 15,481.76
  4. Step 4: Simplify right side
    28,057.28x = 599,420,925.87
  5. Step 5: Solve for x
    x = 599,420,925.87/28,057.28
  6. Step 6: Final answer
    x = 21,364.19

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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.