Home / 11,141.20-15,372.40-6,424.48

Finding the Fourth Proportional to 11,141.20, 15,372.40 and 6,424.48

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Solution

The fourth proportional to 11,141.20, 15,372.40 and 6,424.48 is: 8,864.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,141.20 : 15,372.40 = 6,424.48 : x
  2. Step 2: Convert to fraction form
    11,141.20/15,372.40 = 6,424.48/x
  3. Step 3: Cross multiply
    11,141.20x = 15,372.40 × 6,424.48
  4. Step 4: Simplify right side
    11,141.20x = 98,759,676.35
  5. Step 5: Solve for x
    x = 98,759,676.35/11,141.20
  6. Step 6: Final answer
    x = 8,864.37

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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.