Home / 19,825.52-27,369.85-15,311.56

Finding the Fourth Proportional to 19,825.52, 27,369.85 and 15,311.56

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Solution

The fourth proportional to 19,825.52, 27,369.85 and 15,311.56 is: 21,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,825.52 : 27,369.85 = 15,311.56 : x
  2. Step 2: Convert to fraction form
    19,825.52/27,369.85 = 15,311.56/x
  3. Step 3: Cross multiply
    19,825.52x = 27,369.85 × 15,311.56
  4. Step 4: Simplify right side
    19,825.52x = 419,075,225.75
  5. Step 5: Solve for x
    x = 419,075,225.75/19,825.52
  6. Step 6: Final answer
    x = 21,138.17

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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.