Home / 28,061.93-38,724.25-15,314.79

Finding the Fourth Proportional to 28,061.93, 38,724.25 and 15,314.79

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Solution

The fourth proportional to 28,061.93, 38,724.25 and 15,314.79 is: 21,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.93 : 38,724.25 = 15,314.79 : x
  2. Step 2: Convert to fraction form
    28,061.93/38,724.25 = 15,314.79/x
  3. Step 3: Cross multiply
    28,061.93x = 38,724.25 × 15,314.79
  4. Step 4: Simplify right side
    28,061.93x = 593,053,680.08
  5. Step 5: Solve for x
    x = 593,053,680.08/28,061.93
  6. Step 6: Final answer
    x = 21,133.75

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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.