Home / 13,189.24-18,294.43-12,716.56

Finding the Fourth Proportional to 13,189.24, 18,294.43 and 12,716.56

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Solution

The fourth proportional to 13,189.24, 18,294.43 and 12,716.56 is: 17,638.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.24 : 18,294.43 = 12,716.56 : x
  2. Step 2: Convert to fraction form
    13,189.24/18,294.43 = 12,716.56/x
  3. Step 3: Cross multiply
    13,189.24x = 18,294.43 × 12,716.56
  4. Step 4: Simplify right side
    13,189.24x = 232,642,216.76
  5. Step 5: Solve for x
    x = 232,642,216.76/13,189.24
  6. Step 6: Final answer
    x = 17,638.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.