Home / 31,600.75-47,261.69-28,115.21

Finding the Fourth Proportional to 31,600.75, 47,261.69 and 28,115.21

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Solution

The fourth proportional to 31,600.75, 47,261.69 and 28,115.21 is: 42,048.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,600.75 : 47,261.69 = 28,115.21 : x
  2. Step 2: Convert to fraction form
    31,600.75/47,261.69 = 28,115.21/x
  3. Step 3: Cross multiply
    31,600.75x = 47,261.69 × 28,115.21
  4. Step 4: Simplify right side
    31,600.75x = 1,328,772,339.30
  5. Step 5: Solve for x
    x = 1,328,772,339.30/31,600.75
  6. Step 6: Final answer
    x = 42,048.76

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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.