Home / 31,397.05-43,325.96-28,889.29

Finding the Fourth Proportional to 31,397.05, 43,325.96 and 28,889.29

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Solution

The fourth proportional to 31,397.05, 43,325.96 and 28,889.29 is: 39,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,397.05 : 43,325.96 = 28,889.29 : x
  2. Step 2: Convert to fraction form
    31,397.05/43,325.96 = 28,889.29/x
  3. Step 3: Cross multiply
    31,397.05x = 43,325.96 × 28,889.29
  4. Step 4: Simplify right side
    31,397.05x = 1,251,656,078.52
  5. Step 5: Solve for x
    x = 1,251,656,078.52/31,397.05
  6. Step 6: Final answer
    x = 39,865.40

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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.