Home / 15,306.88-21,119.60-9,338.16

Finding the Fourth Proportional to 15,306.88, 21,119.60 and 9,338.16

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Solution

The fourth proportional to 15,306.88, 21,119.60 and 9,338.16 is: 12,884.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.88 : 21,119.60 = 9,338.16 : x
  2. Step 2: Convert to fraction form
    15,306.88/21,119.60 = 9,338.16/x
  3. Step 3: Cross multiply
    15,306.88x = 21,119.60 × 9,338.16
  4. Step 4: Simplify right side
    15,306.88x = 197,218,203.94
  5. Step 5: Solve for x
    x = 197,218,203.94/15,306.88
  6. Step 6: Final answer
    x = 12,884.28

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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.