Home / 15,423.97-21,287.10-11,456.41

Finding the Fourth Proportional to 15,423.97, 21,287.10 and 11,456.41

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Solution

The fourth proportional to 15,423.97, 21,287.10 and 11,456.41 is: 15,811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.97 : 21,287.10 = 11,456.41 : x
  2. Step 2: Convert to fraction form
    15,423.97/21,287.10 = 11,456.41/x
  3. Step 3: Cross multiply
    15,423.97x = 21,287.10 × 11,456.41
  4. Step 4: Simplify right side
    15,423.97x = 243,873,745.31
  5. Step 5: Solve for x
    x = 243,873,745.31/15,423.97
  6. Step 6: Final answer
    x = 15,811.35

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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.