Home / 12,157.48-18,231.76-5,915.62

Finding the Fourth Proportional to 12,157.48, 18,231.76 and 5,915.62

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Solution

The fourth proportional to 12,157.48, 18,231.76 and 5,915.62 is: 8,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.48 : 18,231.76 = 5,915.62 : x
  2. Step 2: Convert to fraction form
    12,157.48/18,231.76 = 5,915.62/x
  3. Step 3: Cross multiply
    12,157.48x = 18,231.76 × 5,915.62
  4. Step 4: Simplify right side
    12,157.48x = 107,852,164.09
  5. Step 5: Solve for x
    x = 107,852,164.09/12,157.48
  6. Step 6: Final answer
    x = 8,871.26

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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.