Home / 12,471.36-18,707.04-8,319.48

Finding the Fourth Proportional to 12,471.36, 18,707.04 and 8,319.48

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Solution

The fourth proportional to 12,471.36, 18,707.04 and 8,319.48 is: 12,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.36 : 18,707.04 = 8,319.48 : x
  2. Step 2: Convert to fraction form
    12,471.36/18,707.04 = 8,319.48/x
  3. Step 3: Cross multiply
    12,471.36x = 18,707.04 × 8,319.48
  4. Step 4: Simplify right side
    12,471.36x = 155,632,845.14
  5. Step 5: Solve for x
    x = 155,632,845.14/12,471.36
  6. Step 6: Final answer
    x = 12,479.22

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Similar ratio
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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.