Home / 13,989.99-19,305.58-7,616.59

Finding the Fourth Proportional to 13,989.99, 19,305.58 and 7,616.59

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Solution

The fourth proportional to 13,989.99, 19,305.58 and 7,616.59 is: 10,510.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.99 : 19,305.58 = 7,616.59 : x
  2. Step 2: Convert to fraction form
    13,989.99/19,305.58 = 7,616.59/x
  3. Step 3: Cross multiply
    13,989.99x = 19,305.58 × 7,616.59
  4. Step 4: Simplify right side
    13,989.99x = 147,042,687.57
  5. Step 5: Solve for x
    x = 147,042,687.57/13,989.99
  6. Step 6: Final answer
    x = 10,510.56

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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.