Home / 13,836.81-19,089.36-8,522.40

Finding the Fourth Proportional to 13,836.81, 19,089.36 and 8,522.40

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Solution

The fourth proportional to 13,836.81, 19,089.36 and 8,522.40 is: 11,757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,836.81 : 19,089.36 = 8,522.40 : x
  2. Step 2: Convert to fraction form
    13,836.81/19,089.36 = 8,522.40/x
  3. Step 3: Cross multiply
    13,836.81x = 19,089.36 × 8,522.40
  4. Step 4: Simplify right side
    13,836.81x = 162,687,161.66
  5. Step 5: Solve for x
    x = 162,687,161.66/13,836.81
  6. Step 6: Final answer
    x = 11,757.56

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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.