Home / 13,488.32-20,232.84-5,172.32

Finding the Fourth Proportional to 13,488.32, 20,232.84 and 5,172.32

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Solution

The fourth proportional to 13,488.32, 20,232.84 and 5,172.32 is: 7,758.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.32 : 20,232.84 = 5,172.32 : x
  2. Step 2: Convert to fraction form
    13,488.32/20,232.84 = 5,172.32/x
  3. Step 3: Cross multiply
    13,488.32x = 20,232.84 × 5,172.32
  4. Step 4: Simplify right side
    13,488.32x = 104,650,722.99
  5. Step 5: Solve for x
    x = 104,650,722.99/13,488.32
  6. Step 6: Final answer
    x = 7,758.62

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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.