Home / 15,102.14-20,840.25-8,388.18

Finding the Fourth Proportional to 15,102.14, 20,840.25 and 8,388.18

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Solution

The fourth proportional to 15,102.14, 20,840.25 and 8,388.18 is: 11,575.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.14 : 20,840.25 = 8,388.18 : x
  2. Step 2: Convert to fraction form
    15,102.14/20,840.25 = 8,388.18/x
  3. Step 3: Cross multiply
    15,102.14x = 20,840.25 × 8,388.18
  4. Step 4: Simplify right side
    15,102.14x = 174,811,736.79
  5. Step 5: Solve for x
    x = 174,811,736.79/15,102.14
  6. Step 6: Final answer
    x = 11,575.29

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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.