Home / 13,847.12-19,081.56-9,861.20

Finding the Fourth Proportional to 13,847.12, 19,081.56 and 9,861.20

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Solution

The fourth proportional to 13,847.12, 19,081.56 and 9,861.20 is: 13,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,847.12 : 19,081.56 = 9,861.20 : x
  2. Step 2: Convert to fraction form
    13,847.12/19,081.56 = 9,861.20/x
  3. Step 3: Cross multiply
    13,847.12x = 19,081.56 × 9,861.20
  4. Step 4: Simplify right side
    13,847.12x = 188,167,079.47
  5. Step 5: Solve for x
    x = 188,167,079.47/13,847.12
  6. Step 6: Final answer
    x = 13,588.90

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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.