Home / 31,428.42-43,370.55-17,280.96

Finding the Fourth Proportional to 31,428.42, 43,370.55 and 17,280.96

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Solution

The fourth proportional to 31,428.42, 43,370.55 and 17,280.96 is: 23,847.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.42 : 43,370.55 = 17,280.96 : x
  2. Step 2: Convert to fraction form
    31,428.42/43,370.55 = 17,280.96/x
  3. Step 3: Cross multiply
    31,428.42x = 43,370.55 × 17,280.96
  4. Step 4: Simplify right side
    31,428.42x = 749,484,739.73
  5. Step 5: Solve for x
    x = 749,484,739.73/31,428.42
  6. Step 6: Final answer
    x = 23,847.36

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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.