Home / 9,982.20-14,967.90-4,139.40

Finding the Fourth Proportional to 9,982.20, 14,967.90 and 4,139.40

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Solution

The fourth proportional to 9,982.20, 14,967.90 and 4,139.40 is: 6,206.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,982.20 : 14,967.90 = 4,139.40 : x
  2. Step 2: Convert to fraction form
    9,982.20/14,967.90 = 4,139.40/x
  3. Step 3: Cross multiply
    9,982.20x = 14,967.90 × 4,139.40
  4. Step 4: Simplify right side
    9,982.20x = 61,958,125.26
  5. Step 5: Solve for x
    x = 61,958,125.26/9,982.20
  6. Step 6: Final answer
    x = 6,206.86

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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.