Home / 13,206.53-18,225.15-7,238.45

Finding the Fourth Proportional to 13,206.53, 18,225.15 and 7,238.45

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Solution

The fourth proportional to 13,206.53, 18,225.15 and 7,238.45 is: 9,989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.53 : 18,225.15 = 7,238.45 : x
  2. Step 2: Convert to fraction form
    13,206.53/18,225.15 = 7,238.45/x
  3. Step 3: Cross multiply
    13,206.53x = 18,225.15 × 7,238.45
  4. Step 4: Simplify right side
    13,206.53x = 131,921,745.89
  5. Step 5: Solve for x
    x = 131,921,745.89/13,206.53
  6. Step 6: Final answer
    x = 9,989.13

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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.