Home / 18,639.11-25,717.75-13,606.08

Finding the Fourth Proportional to 18,639.11, 25,717.75 and 13,606.08

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Solution

The fourth proportional to 18,639.11, 25,717.75 and 13,606.08 is: 18,773.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.11 : 25,717.75 = 13,606.08 : x
  2. Step 2: Convert to fraction form
    18,639.11/25,717.75 = 13,606.08/x
  3. Step 3: Cross multiply
    18,639.11x = 25,717.75 × 13,606.08
  4. Step 4: Simplify right side
    18,639.11x = 349,917,710.00
  5. Step 5: Solve for x
    x = 349,917,710.00/18,639.11
  6. Step 6: Final answer
    x = 18,773.30

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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.