Home / 19,947.40-29,964.30-14,115.40

Finding the Fourth Proportional to 19,947.40, 29,964.30 and 14,115.40

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Solution

The fourth proportional to 19,947.40, 29,964.30 and 14,115.40 is: 21,203.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.40 : 29,964.30 = 14,115.40 : x
  2. Step 2: Convert to fraction form
    19,947.40/29,964.30 = 14,115.40/x
  3. Step 3: Cross multiply
    19,947.40x = 29,964.30 × 14,115.40
  4. Step 4: Simplify right side
    19,947.40x = 422,958,080.22
  5. Step 5: Solve for x
    x = 422,958,080.22/19,947.40
  6. Step 6: Final answer
    x = 21,203.67

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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.