Home / 13,378.57-20,050.42-7,455.22

Finding the Fourth Proportional to 13,378.57, 20,050.42 and 7,455.22

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Solution

The fourth proportional to 13,378.57, 20,050.42 and 7,455.22 is: 11,173.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.57 : 20,050.42 = 7,455.22 : x
  2. Step 2: Convert to fraction form
    13,378.57/20,050.42 = 7,455.22/x
  3. Step 3: Cross multiply
    13,378.57x = 20,050.42 × 7,455.22
  4. Step 4: Simplify right side
    13,378.57x = 149,480,223.43
  5. Step 5: Solve for x
    x = 149,480,223.43/13,378.57
  6. Step 6: Final answer
    x = 11,173.11

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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.