Home / 31,483.17-43,458.17-20,876.31

Finding the Fourth Proportional to 31,483.17, 43,458.17 and 20,876.31

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Solution

The fourth proportional to 31,483.17, 43,458.17 and 20,876.31 is: 28,816.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,483.17 : 43,458.17 = 20,876.31 : x
  2. Step 2: Convert to fraction form
    31,483.17/43,458.17 = 20,876.31/x
  3. Step 3: Cross multiply
    31,483.17x = 43,458.17 × 20,876.31
  4. Step 4: Simplify right side
    31,483.17x = 907,246,124.57
  5. Step 5: Solve for x
    x = 907,246,124.57/31,483.17
  6. Step 6: Final answer
    x = 28,816.86

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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.