Home / 13,657.13-18,842.44-8,281.72

Finding the Fourth Proportional to 13,657.13, 18,842.44 and 8,281.72

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Solution

The fourth proportional to 13,657.13, 18,842.44 and 8,281.72 is: 11,426.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.13 : 18,842.44 = 8,281.72 : x
  2. Step 2: Convert to fraction form
    13,657.13/18,842.44 = 8,281.72/x
  3. Step 3: Cross multiply
    13,657.13x = 18,842.44 × 8,281.72
  4. Step 4: Simplify right side
    13,657.13x = 156,047,770.79
  5. Step 5: Solve for x
    x = 156,047,770.79/13,657.13
  6. Step 6: Final answer
    x = 11,426.11

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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.