Home / 13,438.24-18,544.75-7,470.43

Finding the Fourth Proportional to 13,438.24, 18,544.75 and 7,470.43

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Solution

The fourth proportional to 13,438.24, 18,544.75 and 7,470.43 is: 10,309.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.24 : 18,544.75 = 7,470.43 : x
  2. Step 2: Convert to fraction form
    13,438.24/18,544.75 = 7,470.43/x
  3. Step 3: Cross multiply
    13,438.24x = 18,544.75 × 7,470.43
  4. Step 4: Simplify right side
    13,438.24x = 138,537,191.70
  5. Step 5: Solve for x
    x = 138,537,191.70/13,438.24
  6. Step 6: Final answer
    x = 10,309.18

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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.