Home / 11,132.64-15,355.44-6,415.20

Finding the Fourth Proportional to 11,132.64, 15,355.44 and 6,415.20

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Solution

The fourth proportional to 11,132.64, 15,355.44 and 6,415.20 is: 8,848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,132.64 : 15,355.44 = 6,415.20 : x
  2. Step 2: Convert to fraction form
    11,132.64/15,355.44 = 6,415.20/x
  3. Step 3: Cross multiply
    11,132.64x = 15,355.44 × 6,415.20
  4. Step 4: Simplify right side
    11,132.64x = 98,508,218.69
  5. Step 5: Solve for x
    x = 98,508,218.69/11,132.64
  6. Step 6: Final answer
    x = 8,848.59

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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.