Home / 13,463.20-18,566.40-8,918.68

Finding the Fourth Proportional to 13,463.20, 18,566.40 and 8,918.68

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Solution

The fourth proportional to 13,463.20, 18,566.40 and 8,918.68 is: 12,299.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463.20 : 18,566.40 = 8,918.68 : x
  2. Step 2: Convert to fraction form
    13,463.20/18,566.40 = 8,918.68/x
  3. Step 3: Cross multiply
    13,463.20x = 18,566.40 × 8,918.68
  4. Step 4: Simplify right side
    13,463.20x = 165,587,780.35
  5. Step 5: Solve for x
    x = 165,587,780.35/13,463.20
  6. Step 6: Final answer
    x = 12,299.29

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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.