Home / 13,816.78-19,069.56-8,151.17

Finding the Fourth Proportional to 13,816.78, 19,069.56 and 8,151.17

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Solution

The fourth proportional to 13,816.78, 19,069.56 and 8,151.17 is: 11,250.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.78 : 19,069.56 = 8,151.17 : x
  2. Step 2: Convert to fraction form
    13,816.78/19,069.56 = 8,151.17/x
  3. Step 3: Cross multiply
    13,816.78x = 19,069.56 × 8,151.17
  4. Step 4: Simplify right side
    13,816.78x = 155,439,130.04
  5. Step 5: Solve for x
    x = 155,439,130.04/13,816.78
  6. Step 6: Final answer
    x = 11,250.03

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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.