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Finding the Fourth Proportional to 18,431.79, 27,627.60 and 9,053.19

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Solution

The fourth proportional to 18,431.79, 27,627.60 and 9,053.19 is: 13,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.79 : 27,627.60 = 9,053.19 : x
  2. Step 2: Convert to fraction form
    18,431.79/27,627.60 = 9,053.19/x
  3. Step 3: Cross multiply
    18,431.79x = 27,627.60 × 9,053.19
  4. Step 4: Simplify right side
    18,431.79x = 250,117,912.04
  5. Step 5: Solve for x
    x = 250,117,912.04/18,431.79
  6. Step 6: Final answer
    x = 13,569.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.