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Finding the Fourth Proportional to 18,450.60, 27,708.30 and 17,867.40

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Solution

The fourth proportional to 18,450.60, 27,708.30 and 17,867.40 is: 26,832.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,450.60 : 27,708.30 = 17,867.40 : x
  2. Step 2: Convert to fraction form
    18,450.60/27,708.30 = 17,867.40/x
  3. Step 3: Cross multiply
    18,450.60x = 27,708.30 × 17,867.40
  4. Step 4: Simplify right side
    18,450.60x = 495,075,279.42
  5. Step 5: Solve for x
    x = 495,075,279.42/18,450.60
  6. Step 6: Final answer
    x = 26,832.48

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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.