Home / 21,344.22-29,456.51-12,392.72

Finding the Fourth Proportional to 21,344.22, 29,456.51 and 12,392.72

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Solution

The fourth proportional to 21,344.22, 29,456.51 and 12,392.72 is: 17,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.22 : 29,456.51 = 12,392.72 : x
  2. Step 2: Convert to fraction form
    21,344.22/29,456.51 = 12,392.72/x
  3. Step 3: Cross multiply
    21,344.22x = 29,456.51 × 12,392.72
  4. Step 4: Simplify right side
    21,344.22x = 365,046,071.36
  5. Step 5: Solve for x
    x = 365,046,071.36/21,344.22
  6. Step 6: Final answer
    x = 17,102.81

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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.