Home / 31,512.92-47,278.16-13,745.16

Finding the Fourth Proportional to 31,512.92, 47,278.16 and 13,745.16

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Solution

The fourth proportional to 31,512.92, 47,278.16 and 13,745.16 is: 20,621.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,512.92 : 47,278.16 = 13,745.16 : x
  2. Step 2: Convert to fraction form
    31,512.92/47,278.16 = 13,745.16/x
  3. Step 3: Cross multiply
    31,512.92x = 47,278.16 × 13,745.16
  4. Step 4: Simplify right side
    31,512.92x = 649,846,085.36
  5. Step 5: Solve for x
    x = 649,846,085.36/31,512.92
  6. Step 6: Final answer
    x = 20,621.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.