Home / 21,260.10-31,876.47-10,166.55

Finding the Fourth Proportional to 21,260.10, 31,876.47 and 10,166.55

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Solution

The fourth proportional to 21,260.10, 31,876.47 and 10,166.55 is: 15,243.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.10 : 31,876.47 = 10,166.55 : x
  2. Step 2: Convert to fraction form
    21,260.10/31,876.47 = 10,166.55/x
  3. Step 3: Cross multiply
    21,260.10x = 31,876.47 × 10,166.55
  4. Step 4: Simplify right side
    21,260.10x = 324,073,726.08
  5. Step 5: Solve for x
    x = 324,073,726.08/21,260.10
  6. Step 6: Final answer
    x = 15,243.28

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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.