Home / 13,995.24-20,981.52-5,228.88

Finding the Fourth Proportional to 13,995.24, 20,981.52 and 5,228.88

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Solution

The fourth proportional to 13,995.24, 20,981.52 and 5,228.88 is: 7,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.24 : 20,981.52 = 5,228.88 : x
  2. Step 2: Convert to fraction form
    13,995.24/20,981.52 = 5,228.88/x
  3. Step 3: Cross multiply
    13,995.24x = 20,981.52 × 5,228.88
  4. Step 4: Simplify right side
    13,995.24x = 109,709,850.30
  5. Step 5: Solve for x
    x = 109,709,850.30/13,995.24
  6. Step 6: Final answer
    x = 7,839.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.