Home / 13,665.28-18,858.58-7,616.06

Finding the Fourth Proportional to 13,665.28, 18,858.58 and 7,616.06

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Solution

The fourth proportional to 13,665.28, 18,858.58 and 7,616.06 is: 10,510.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.28 : 18,858.58 = 7,616.06 : x
  2. Step 2: Convert to fraction form
    13,665.28/18,858.58 = 7,616.06/x
  3. Step 3: Cross multiply
    13,665.28x = 18,858.58 × 7,616.06
  4. Step 4: Simplify right side
    13,665.28x = 143,628,076.79
  5. Step 5: Solve for x
    x = 143,628,076.79/13,665.28
  6. Step 6: Final answer
    x = 10,510.44

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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.