Home / 13,320.32-19,989.38-5,529.12

Finding the Fourth Proportional to 13,320.32, 19,989.38 and 5,529.12

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Solution

The fourth proportional to 13,320.32, 19,989.38 and 5,529.12 is: 8,297.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.32 : 19,989.38 = 5,529.12 : x
  2. Step 2: Convert to fraction form
    13,320.32/19,989.38 = 5,529.12/x
  3. Step 3: Cross multiply
    13,320.32x = 19,989.38 × 5,529.12
  4. Step 4: Simplify right side
    13,320.32x = 110,523,680.75
  5. Step 5: Solve for x
    x = 110,523,680.75/13,320.32
  6. Step 6: Final answer
    x = 8,297.37

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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.