Home / 11,148.64-15,379.68-9,379.60

Finding the Fourth Proportional to 11,148.64, 15,379.68 and 9,379.60

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Solution

The fourth proportional to 11,148.64, 15,379.68 and 9,379.60 is: 12,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.64 : 15,379.68 = 9,379.60 : x
  2. Step 2: Convert to fraction form
    11,148.64/15,379.68 = 9,379.60/x
  3. Step 3: Cross multiply
    11,148.64x = 15,379.68 × 9,379.60
  4. Step 4: Simplify right side
    11,148.64x = 144,255,246.53
  5. Step 5: Solve for x
    x = 144,255,246.53/11,148.64
  6. Step 6: Final answer
    x = 12,939.27

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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.