Home / 21,260.90-31,891.88-10,168.76

Finding the Fourth Proportional to 21,260.90, 31,891.88 and 10,168.76

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Solution

The fourth proportional to 21,260.90, 31,891.88 and 10,168.76 is: 15,253.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.90 : 31,891.88 = 10,168.76 : x
  2. Step 2: Convert to fraction form
    21,260.90/31,891.88 = 10,168.76/x
  3. Step 3: Cross multiply
    21,260.90x = 31,891.88 × 10,168.76
  4. Step 4: Simplify right side
    21,260.90x = 324,300,822.83
  5. Step 5: Solve for x
    x = 324,300,822.83/21,260.90
  6. Step 6: Final answer
    x = 15,253.39

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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.