Home / 13,989.11-19,305.40-7,616.12

Finding the Fourth Proportional to 13,989.11, 19,305.40 and 7,616.12

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Solution

The fourth proportional to 13,989.11, 19,305.40 and 7,616.12 is: 10,510.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.11 : 19,305.40 = 7,616.12 : x
  2. Step 2: Convert to fraction form
    13,989.11/19,305.40 = 7,616.12/x
  3. Step 3: Cross multiply
    13,989.11x = 19,305.40 × 7,616.12
  4. Step 4: Simplify right side
    13,989.11x = 147,032,204.97
  5. Step 5: Solve for x
    x = 147,032,204.97/13,989.11
  6. Step 6: Final answer
    x = 10,510.48

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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.