Home / 21,304.32-29,401.20-11,873.12

Finding the Fourth Proportional to 21,304.32, 29,401.20 and 11,873.12

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Solution

The fourth proportional to 21,304.32, 29,401.20 and 11,873.12 is: 16,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.32 : 29,401.20 = 11,873.12 : x
  2. Step 2: Convert to fraction form
    21,304.32/29,401.20 = 11,873.12/x
  3. Step 3: Cross multiply
    21,304.32x = 29,401.20 × 11,873.12
  4. Step 4: Simplify right side
    21,304.32x = 349,083,975.74
  5. Step 5: Solve for x
    x = 349,083,975.74/21,304.32
  6. Step 6: Final answer
    x = 16,385.60

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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.