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Finding the Fourth Proportional to 18,495.40, 27,751.42 and 8,637.56

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Solution

The fourth proportional to 18,495.40, 27,751.42 and 8,637.56 is: 12,960.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.40 : 27,751.42 = 8,637.56 : x
  2. Step 2: Convert to fraction form
    18,495.40/27,751.42 = 8,637.56/x
  3. Step 3: Cross multiply
    18,495.40x = 27,751.42 × 8,637.56
  4. Step 4: Simplify right side
    18,495.40x = 239,704,555.34
  5. Step 5: Solve for x
    x = 239,704,555.34/18,495.40
  6. Step 6: Final answer
    x = 12,960.23

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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.