Home / 31,576.14-43,567.14-21,385.92

Finding the Fourth Proportional to 31,576.14, 43,567.14 and 21,385.92

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Solution

The fourth proportional to 31,576.14, 43,567.14 and 21,385.92 is: 29,507.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,576.14 : 43,567.14 = 21,385.92 : x
  2. Step 2: Convert to fraction form
    31,576.14/43,567.14 = 21,385.92/x
  3. Step 3: Cross multiply
    31,576.14x = 43,567.14 × 21,385.92
  4. Step 4: Simplify right side
    31,576.14x = 931,723,370.67
  5. Step 5: Solve for x
    x = 931,723,370.67/31,576.14
  6. Step 6: Final answer
    x = 29,507.20

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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.