Home / 13,223.07-18,249.30-8,447.40

Finding the Fourth Proportional to 13,223.07, 18,249.30 and 8,447.40

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Solution

The fourth proportional to 13,223.07, 18,249.30 and 8,447.40 is: 11,658.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.07 : 18,249.30 = 8,447.40 : x
  2. Step 2: Convert to fraction form
    13,223.07/18,249.30 = 8,447.40/x
  3. Step 3: Cross multiply
    13,223.07x = 18,249.30 × 8,447.40
  4. Step 4: Simplify right side
    13,223.07x = 154,159,136.82
  5. Step 5: Solve for x
    x = 154,159,136.82/13,223.07
  6. Step 6: Final answer
    x = 11,658.35

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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.