Home / 21,040.32-31,534.56-15,409.44

Finding the Fourth Proportional to 21,040.32, 31,534.56 and 15,409.44

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Solution

The fourth proportional to 21,040.32, 31,534.56 and 15,409.44 is: 23,095.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.32 : 31,534.56 = 15,409.44 : x
  2. Step 2: Convert to fraction form
    21,040.32/31,534.56 = 15,409.44/x
  3. Step 3: Cross multiply
    21,040.32x = 31,534.56 × 15,409.44
  4. Step 4: Simplify right side
    21,040.32x = 485,929,910.25
  5. Step 5: Solve for x
    x = 485,929,910.25/21,040.32
  6. Step 6: Final answer
    x = 23,095.18

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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.