Home / 28,061.76-38,725.36-15,487.32

Finding the Fourth Proportional to 28,061.76, 38,725.36 and 15,487.32

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Solution

The fourth proportional to 28,061.76, 38,725.36 and 15,487.32 is: 21,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.76 : 38,725.36 = 15,487.32 : x
  2. Step 2: Convert to fraction form
    28,061.76/38,725.36 = 15,487.32/x
  3. Step 3: Cross multiply
    28,061.76x = 38,725.36 × 15,487.32
  4. Step 4: Simplify right side
    28,061.76x = 599,752,042.44
  5. Step 5: Solve for x
    x = 599,752,042.44/28,061.76
  6. Step 6: Final answer
    x = 21,372.57

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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.