Home / 11,155.77-15,388.11-9,256.32

Finding the Fourth Proportional to 11,155.77, 15,388.11 and 9,256.32

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Solution

The fourth proportional to 11,155.77, 15,388.11 and 9,256.32 is: 12,768.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.77 : 15,388.11 = 9,256.32 : x
  2. Step 2: Convert to fraction form
    11,155.77/15,388.11 = 9,256.32/x
  3. Step 3: Cross multiply
    11,155.77x = 15,388.11 × 9,256.32
  4. Step 4: Simplify right side
    11,155.77x = 142,437,270.36
  5. Step 5: Solve for x
    x = 142,437,270.36/11,155.77
  6. Step 6: Final answer
    x = 12,768.04

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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.