Home / 31,427.91-43,370.38-17,280.72

Finding the Fourth Proportional to 31,427.91, 43,370.38 and 17,280.72

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Solution

The fourth proportional to 31,427.91, 43,370.38 and 17,280.72 is: 23,847.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,427.91 : 43,370.38 = 17,280.72 : x
  2. Step 2: Convert to fraction form
    31,427.91/43,370.38 = 17,280.72/x
  3. Step 3: Cross multiply
    31,427.91x = 43,370.38 × 17,280.72
  4. Step 4: Simplify right side
    31,427.91x = 749,471,458.30
  5. Step 5: Solve for x
    x = 749,471,458.30/31,427.91
  6. Step 6: Final answer
    x = 23,847.32

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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.