Home / 21,339.18-31,964.12-17,156.54

Finding the Fourth Proportional to 21,339.18, 31,964.12 and 17,156.54

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Solution

The fourth proportional to 21,339.18, 31,964.12 and 17,156.54 is: 25,698.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.18 : 31,964.12 = 17,156.54 : x
  2. Step 2: Convert to fraction form
    21,339.18/31,964.12 = 17,156.54/x
  3. Step 3: Cross multiply
    21,339.18x = 31,964.12 × 17,156.54
  4. Step 4: Simplify right side
    21,339.18x = 548,393,761.81
  5. Step 5: Solve for x
    x = 548,393,761.81/21,339.18
  6. Step 6: Final answer
    x = 25,698.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.