Home / 13,020.70-17,972.76-9,662.44

Finding the Fourth Proportional to 13,020.70, 17,972.76 and 9,662.44

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Solution

The fourth proportional to 13,020.70, 17,972.76 and 9,662.44 is: 13,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.70 : 17,972.76 = 9,662.44 : x
  2. Step 2: Convert to fraction form
    13,020.70/17,972.76 = 9,662.44/x
  3. Step 3: Cross multiply
    13,020.70x = 17,972.76 × 9,662.44
  4. Step 4: Simplify right side
    13,020.70x = 173,660,715.13
  5. Step 5: Solve for x
    x = 173,660,715.13/13,020.70
  6. Step 6: Final answer
    x = 13,337.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.