Home / 9,112.19-13,672.60-5,421.69

Finding the Fourth Proportional to 9,112.19, 13,672.60 and 5,421.69

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Solution

The fourth proportional to 9,112.19, 13,672.60 and 5,421.69 is: 8,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112.19 : 13,672.60 = 5,421.69 : x
  2. Step 2: Convert to fraction form
    9,112.19/13,672.60 = 5,421.69/x
  3. Step 3: Cross multiply
    9,112.19x = 13,672.60 × 5,421.69
  4. Step 4: Simplify right side
    9,112.19x = 74,128,585.14
  5. Step 5: Solve for x
    x = 74,128,585.14/9,112.19
  6. Step 6: Final answer
    x = 8,135.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.