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Finding the Fourth Proportional to 21,980.67, 32,980.23 and 9,494.28

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Solution

The fourth proportional to 21,980.67, 32,980.23 and 9,494.28 is: 14,245.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.67 : 32,980.23 = 9,494.28 : x
  2. Step 2: Convert to fraction form
    21,980.67/32,980.23 = 9,494.28/x
  3. Step 3: Cross multiply
    21,980.67x = 32,980.23 × 9,494.28
  4. Step 4: Simplify right side
    21,980.67x = 313,123,538.08
  5. Step 5: Solve for x
    x = 313,123,538.08/21,980.67
  6. Step 6: Final answer
    x = 14,245.41

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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.