Home / 13,579.75-20,378.13-7,344.07

Finding the Fourth Proportional to 13,579.75, 20,378.13 and 7,344.07

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Solution

The fourth proportional to 13,579.75, 20,378.13 and 7,344.07 is: 11,020.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.75 : 20,378.13 = 7,344.07 : x
  2. Step 2: Convert to fraction form
    13,579.75/20,378.13 = 7,344.07/x
  3. Step 3: Cross multiply
    13,579.75x = 20,378.13 × 7,344.07
  4. Step 4: Simplify right side
    13,579.75x = 149,658,376.01
  5. Step 5: Solve for x
    x = 149,658,376.01/13,579.75
  6. Step 6: Final answer
    x = 11,020.70

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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.