Home / 15,304.80-21,120.96-9,335.76

Finding the Fourth Proportional to 15,304.80, 21,120.96 and 9,335.76

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Solution

The fourth proportional to 15,304.80, 21,120.96 and 9,335.76 is: 12,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.80 : 21,120.96 = 9,335.76 : x
  2. Step 2: Convert to fraction form
    15,304.80/21,120.96 = 9,335.76/x
  3. Step 3: Cross multiply
    15,304.80x = 21,120.96 × 9,335.76
  4. Step 4: Simplify right side
    15,304.80x = 197,180,213.53
  5. Step 5: Solve for x
    x = 197,180,213.53/15,304.80
  6. Step 6: Final answer
    x = 12,883.55

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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.