Home / 11,125.48-15,353.94-7,147.84

Finding the Fourth Proportional to 11,125.48, 15,353.94 and 7,147.84

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Solution

The fourth proportional to 11,125.48, 15,353.94 and 7,147.84 is: 9,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.48 : 15,353.94 = 7,147.84 : x
  2. Step 2: Convert to fraction form
    11,125.48/15,353.94 = 7,147.84/x
  3. Step 3: Cross multiply
    11,125.48x = 15,353.94 × 7,147.84
  4. Step 4: Simplify right side
    11,125.48x = 109,747,506.49
  5. Step 5: Solve for x
    x = 109,747,506.49/11,125.48
  6. Step 6: Final answer
    x = 9,864.52

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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.