Home / 11,155.26-15,392.52-6,438.63

Finding the Fourth Proportional to 11,155.26, 15,392.52 and 6,438.63

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Solution

The fourth proportional to 11,155.26, 15,392.52 and 6,438.63 is: 8,884.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.26 : 15,392.52 = 6,438.63 : x
  2. Step 2: Convert to fraction form
    11,155.26/15,392.52 = 6,438.63/x
  3. Step 3: Cross multiply
    11,155.26x = 15,392.52 × 6,438.63
  4. Step 4: Simplify right side
    11,155.26x = 99,106,741.05
  5. Step 5: Solve for x
    x = 99,106,741.05/11,155.26
  6. Step 6: Final answer
    x = 8,884.31

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Half scale
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Double scale
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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.