Home / 21,255.54-31,883.37-10,159.71

Finding the Fourth Proportional to 21,255.54, 31,883.37 and 10,159.71

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Solution

The fourth proportional to 21,255.54, 31,883.37 and 10,159.71 is: 15,239.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.54 : 31,883.37 = 10,159.71 : x
  2. Step 2: Convert to fraction form
    21,255.54/31,883.37 = 10,159.71/x
  3. Step 3: Cross multiply
    21,255.54x = 31,883.37 × 10,159.71
  4. Step 4: Simplify right side
    21,255.54x = 323,925,793.02
  5. Step 5: Solve for x
    x = 323,925,793.02/21,255.54
  6. Step 6: Final answer
    x = 15,239.59

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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.