Home / 11,255.12-15,533.38-6,781.14

Finding the Fourth Proportional to 11,255.12, 15,533.38 and 6,781.14

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Solution

The fourth proportional to 11,255.12, 15,533.38 and 6,781.14 is: 9,358.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,255.12 : 15,533.38 = 6,781.14 : x
  2. Step 2: Convert to fraction form
    11,255.12/15,533.38 = 6,781.14/x
  3. Step 3: Cross multiply
    11,255.12x = 15,533.38 × 6,781.14
  4. Step 4: Simplify right side
    11,255.12x = 105,334,024.45
  5. Step 5: Solve for x
    x = 105,334,024.45/11,255.12
  6. Step 6: Final answer
    x = 9,358.77

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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.