Home / 12,486.13-17,223.56-7,771.93

Finding the Fourth Proportional to 12,486.13, 17,223.56 and 7,771.93

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Solution

The fourth proportional to 12,486.13, 17,223.56 and 7,771.93 is: 10,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.13 : 17,223.56 = 7,771.93 : x
  2. Step 2: Convert to fraction form
    12,486.13/17,223.56 = 7,771.93/x
  3. Step 3: Cross multiply
    12,486.13x = 17,223.56 × 7,771.93
  4. Step 4: Simplify right side
    12,486.13x = 133,860,177.69
  5. Step 5: Solve for x
    x = 133,860,177.69/12,486.13
  6. Step 6: Final answer
    x = 10,720.71

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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.