Home / 21,254.92-29,331-11,823.28

Finding the Fourth Proportional to 21,254.92, 29,331 and 11,823.28

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Solution

The fourth proportional to 21,254.92, 29,331 and 11,823.28 is: 16,315.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.92 : 29,331 = 11,823.28 : x
  2. Step 2: Convert to fraction form
    21,254.92/29,331 = 11,823.28/x
  3. Step 3: Cross multiply
    21,254.92x = 29,331 × 11,823.28
  4. Step 4: Simplify right side
    21,254.92x = 346,788,625.68
  5. Step 5: Solve for x
    x = 346,788,625.68/21,254.92
  6. Step 6: Final answer
    x = 16,315.69

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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.