Home / 13,438.26-18,544.32-7,470.18

Finding the Fourth Proportional to 13,438.26, 18,544.32 and 7,470.18

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Solution

The fourth proportional to 13,438.26, 18,544.32 and 7,470.18 is: 10,308.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.26 : 18,544.32 = 7,470.18 : x
  2. Step 2: Convert to fraction form
    13,438.26/18,544.32 = 7,470.18/x
  3. Step 3: Cross multiply
    13,438.26x = 18,544.32 × 7,470.18
  4. Step 4: Simplify right side
    13,438.26x = 138,529,408.38
  5. Step 5: Solve for x
    x = 138,529,408.38/13,438.26
  6. Step 6: Final answer
    x = 10,308.58

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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.