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Finding the Fourth Proportional to 18,430.60, 27,645.90 and 17,624.20

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Solution

The fourth proportional to 18,430.60, 27,645.90 and 17,624.20 is: 26,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.60 : 27,645.90 = 17,624.20 : x
  2. Step 2: Convert to fraction form
    18,430.60/27,645.90 = 17,624.20/x
  3. Step 3: Cross multiply
    18,430.60x = 27,645.90 × 17,624.20
  4. Step 4: Simplify right side
    18,430.60x = 487,236,870.78
  5. Step 5: Solve for x
    x = 487,236,870.78/18,430.60
  6. Step 6: Final answer
    x = 26,436.30

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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.