Home / 19,639.87-27,105.81-11,144.08

Finding the Fourth Proportional to 19,639.87, 27,105.81 and 11,144.08

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Solution

The fourth proportional to 19,639.87, 27,105.81 and 11,144.08 is: 15,380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.87 : 27,105.81 = 11,144.08 : x
  2. Step 2: Convert to fraction form
    19,639.87/27,105.81 = 11,144.08/x
  3. Step 3: Cross multiply
    19,639.87x = 27,105.81 × 11,144.08
  4. Step 4: Simplify right side
    19,639.87x = 302,069,307.20
  5. Step 5: Solve for x
    x = 302,069,307.20/19,639.87
  6. Step 6: Final answer
    x = 15,380.41

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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.