Home / 15,143.45-20,886.12-9,839.97

Finding the Fourth Proportional to 15,143.45, 20,886.12 and 9,839.97

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Solution

The fourth proportional to 15,143.45, 20,886.12 and 9,839.97 is: 13,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.45 : 20,886.12 = 9,839.97 : x
  2. Step 2: Convert to fraction form
    15,143.45/20,886.12 = 9,839.97/x
  3. Step 3: Cross multiply
    15,143.45x = 20,886.12 × 9,839.97
  4. Step 4: Simplify right side
    15,143.45x = 205,518,794.22
  5. Step 5: Solve for x
    x = 205,518,794.22/15,143.45
  6. Step 6: Final answer
    x = 13,571.47

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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.