Home / 28,062.68-38,725.29-15,315.54

Finding the Fourth Proportional to 28,062.68, 38,725.29 and 15,315.54

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Solution

The fourth proportional to 28,062.68, 38,725.29 and 15,315.54 is: 21,134.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.68 : 38,725.29 = 15,315.54 : x
  2. Step 2: Convert to fraction form
    28,062.68/38,725.29 = 15,315.54/x
  3. Step 3: Cross multiply
    28,062.68x = 38,725.29 × 15,315.54
  4. Step 4: Simplify right side
    28,062.68x = 593,098,728.01
  5. Step 5: Solve for x
    x = 593,098,728.01/28,062.68
  6. Step 6: Final answer
    x = 21,134.79

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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.