Home / 13,472.19-18,589.99-7,729.35

Finding the Fourth Proportional to 13,472.19, 18,589.99 and 7,729.35

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Solution

The fourth proportional to 13,472.19, 18,589.99 and 7,729.35 is: 10,665.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.19 : 18,589.99 = 7,729.35 : x
  2. Step 2: Convert to fraction form
    13,472.19/18,589.99 = 7,729.35/x
  3. Step 3: Cross multiply
    13,472.19x = 18,589.99 × 7,729.35
  4. Step 4: Simplify right side
    13,472.19x = 143,688,500.56
  5. Step 5: Solve for x
    x = 143,688,500.56/13,472.19
  6. Step 6: Final answer
    x = 10,665.56

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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.