Home / 13,349.88-20,036.96-7,115.12

Finding the Fourth Proportional to 13,349.88, 20,036.96 and 7,115.12

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Solution

The fourth proportional to 13,349.88, 20,036.96 and 7,115.12 is: 10,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.88 : 20,036.96 = 7,115.12 : x
  2. Step 2: Convert to fraction form
    13,349.88/20,036.96 = 7,115.12/x
  3. Step 3: Cross multiply
    13,349.88x = 20,036.96 × 7,115.12
  4. Step 4: Simplify right side
    13,349.88x = 142,565,374.84
  5. Step 5: Solve for x
    x = 142,565,374.84/13,349.88
  6. Step 6: Final answer
    x = 10,679.15

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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.