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Finding the Fourth Proportional to 18,811.15, 25,959.20 and 10,313.29

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Solution

The fourth proportional to 18,811.15, 25,959.20 and 10,313.29 is: 14,232.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.15 : 25,959.20 = 10,313.29 : x
  2. Step 2: Convert to fraction form
    18,811.15/25,959.20 = 10,313.29/x
  3. Step 3: Cross multiply
    18,811.15x = 25,959.20 × 10,313.29
  4. Step 4: Simplify right side
    18,811.15x = 267,724,738.65
  5. Step 5: Solve for x
    x = 267,724,738.65/18,811.15
  6. Step 6: Final answer
    x = 14,232.24

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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.