Home / 27,639.44-38,143.32-15,702.56

Finding the Fourth Proportional to 27,639.44, 38,143.32 and 15,702.56

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Solution

The fourth proportional to 27,639.44, 38,143.32 and 15,702.56 is: 21,670.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.44 : 38,143.32 = 15,702.56 : x
  2. Step 2: Convert to fraction form
    27,639.44/38,143.32 = 15,702.56/x
  3. Step 3: Cross multiply
    27,639.44x = 38,143.32 × 15,702.56
  4. Step 4: Simplify right side
    27,639.44x = 598,947,770.90
  5. Step 5: Solve for x
    x = 598,947,770.90/27,639.44
  6. Step 6: Final answer
    x = 21,670.04

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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.