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Finding the Fourth Proportional to 18,422.75, 25,435.01 and 13,056.57

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Solution

The fourth proportional to 18,422.75, 25,435.01 and 13,056.57 is: 18,026.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.75 : 25,435.01 = 13,056.57 : x
  2. Step 2: Convert to fraction form
    18,422.75/25,435.01 = 13,056.57/x
  3. Step 3: Cross multiply
    18,422.75x = 25,435.01 × 13,056.57
  4. Step 4: Simplify right side
    18,422.75x = 332,094,021.16
  5. Step 5: Solve for x
    x = 332,094,021.16/18,422.75
  6. Step 6: Final answer
    x = 18,026.30

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Half scale
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Double scale
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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.