Home / 31,427.80-43,370.37-17,280.61

Finding the Fourth Proportional to 31,427.80, 43,370.37 and 17,280.61

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Solution

The fourth proportional to 31,427.80, 43,370.37 and 17,280.61 is: 23,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,427.80 : 43,370.37 = 17,280.61 : x
  2. Step 2: Convert to fraction form
    31,427.80/43,370.37 = 17,280.61/x
  3. Step 3: Cross multiply
    31,427.80x = 43,370.37 × 17,280.61
  4. Step 4: Simplify right side
    31,427.80x = 749,466,341.10
  5. Step 5: Solve for x
    x = 749,466,341.10/31,427.80
  6. Step 6: Final answer
    x = 23,847.24

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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.