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Finding the Fourth Proportional to 21,958.57, 32,938.76 and 6,376.20

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Solution

The fourth proportional to 21,958.57, 32,938.76 and 6,376.20 is: 9,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.57 : 32,938.76 = 6,376.20 : x
  2. Step 2: Convert to fraction form
    21,958.57/32,938.76 = 6,376.20/x
  3. Step 3: Cross multiply
    21,958.57x = 32,938.76 × 6,376.20
  4. Step 4: Simplify right side
    21,958.57x = 210,024,121.51
  5. Step 5: Solve for x
    x = 210,024,121.51/21,958.57
  6. Step 6: Final answer
    x = 9,564.56

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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.