Home / 15,839.49-21,859.26-9,126.15

Finding the Fourth Proportional to 15,839.49, 21,859.26 and 9,126.15

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Solution

The fourth proportional to 15,839.49, 21,859.26 and 9,126.15 is: 12,594.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.49 : 21,859.26 = 9,126.15 : x
  2. Step 2: Convert to fraction form
    15,839.49/21,859.26 = 9,126.15/x
  3. Step 3: Cross multiply
    15,839.49x = 21,859.26 × 9,126.15
  4. Step 4: Simplify right side
    15,839.49x = 199,490,885.65
  5. Step 5: Solve for x
    x = 199,490,885.65/15,839.49
  6. Step 6: Final answer
    x = 12,594.53

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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.