Home / 28,060.75-38,724.65-15,486.31

Finding the Fourth Proportional to 28,060.75, 38,724.65 and 15,486.31

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Solution

The fourth proportional to 28,060.75, 38,724.65 and 15,486.31 is: 21,371.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,060.75 : 38,724.65 = 15,486.31 : x
  2. Step 2: Convert to fraction form
    28,060.75/38,724.65 = 15,486.31/x
  3. Step 3: Cross multiply
    28,060.75x = 38,724.65 × 15,486.31
  4. Step 4: Simplify right side
    28,060.75x = 599,701,934.54
  5. Step 5: Solve for x
    x = 599,701,934.54/28,060.75
  6. Step 6: Final answer
    x = 21,371.56

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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.