Home / 21,247.76-29,335.92-15,235.88

Finding the Fourth Proportional to 21,247.76, 29,335.92 and 15,235.88

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Solution

The fourth proportional to 21,247.76, 29,335.92 and 15,235.88 is: 21,035.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.76 : 29,335.92 = 15,235.88 : x
  2. Step 2: Convert to fraction form
    21,247.76/29,335.92 = 15,235.88/x
  3. Step 3: Cross multiply
    21,247.76x = 29,335.92 × 15,235.88
  4. Step 4: Simplify right side
    21,247.76x = 446,958,556.81
  5. Step 5: Solve for x
    x = 446,958,556.81/21,247.76
  6. Step 6: Final answer
    x = 21,035.56

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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.