Home / 13,231.84-18,261.38-8,456.18

Finding the Fourth Proportional to 13,231.84, 18,261.38 and 8,456.18

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Solution

The fourth proportional to 13,231.84, 18,261.38 and 8,456.18 is: 11,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.84 : 18,261.38 = 8,456.18 : x
  2. Step 2: Convert to fraction form
    13,231.84/18,261.38 = 8,456.18/x
  3. Step 3: Cross multiply
    13,231.84x = 18,261.38 × 8,456.18
  4. Step 4: Simplify right side
    13,231.84x = 154,421,516.33
  5. Step 5: Solve for x
    x = 154,421,516.33/13,231.84
  6. Step 6: Final answer
    x = 11,670.45

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Double scale
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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.