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Finding the Fourth Proportional to 18,360, 25,341.12 and 10,912.32

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Solution

The fourth proportional to 18,360, 25,341.12 and 10,912.32 is: 15,061.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360 : 25,341.12 = 10,912.32 : x
  2. Step 2: Convert to fraction form
    18,360/25,341.12 = 10,912.32/x
  3. Step 3: Cross multiply
    18,360x = 25,341.12 × 10,912.32
  4. Step 4: Simplify right side
    18,360x = 276,530,410.60
  5. Step 5: Solve for x
    x = 276,530,410.60/18,360
  6. Step 6: Final answer
    x = 15,061.57

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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.