Home / 13,319.32-19,977.84-7,474.36

Finding the Fourth Proportional to 13,319.32, 19,977.84 and 7,474.36

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Solution

The fourth proportional to 13,319.32, 19,977.84 and 7,474.36 is: 11,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.32 : 19,977.84 = 7,474.36 : x
  2. Step 2: Convert to fraction form
    13,319.32/19,977.84 = 7,474.36/x
  3. Step 3: Cross multiply
    13,319.32x = 19,977.84 × 7,474.36
  4. Step 4: Simplify right side
    13,319.32x = 149,321,568.18
  5. Step 5: Solve for x
    x = 149,321,568.18/13,319.32
  6. Step 6: Final answer
    x = 11,210.90

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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.