Home / 18,643.38-25,719.42-11,085.45

Finding the Fourth Proportional to 18,643.38, 25,719.42 and 11,085.45

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Solution

The fourth proportional to 18,643.38, 25,719.42 and 11,085.45 is: 15,292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.38 : 25,719.42 = 11,085.45 : x
  2. Step 2: Convert to fraction form
    18,643.38/25,719.42 = 11,085.45/x
  3. Step 3: Cross multiply
    18,643.38x = 25,719.42 × 11,085.45
  4. Step 4: Simplify right side
    18,643.38x = 285,111,344.44
  5. Step 5: Solve for x
    x = 285,111,344.44/18,643.38
  6. Step 6: Final answer
    x = 15,292.90

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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.