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Finding the Fourth Proportional to 18,180.81, 25,087.60 and 10,113.16

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Solution

The fourth proportional to 18,180.81, 25,087.60 and 10,113.16 is: 13,955.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180.81 : 25,087.60 = 10,113.16 : x
  2. Step 2: Convert to fraction form
    18,180.81/25,087.60 = 10,113.16/x
  3. Step 3: Cross multiply
    18,180.81x = 25,087.60 × 10,113.16
  4. Step 4: Simplify right side
    18,180.81x = 253,714,787.38
  5. Step 5: Solve for x
    x = 253,714,787.38/18,180.81
  6. Step 6: Final answer
    x = 13,955.09

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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.