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Finding the Fourth Proportional to 21,922.87, 32,880.70 and 9,439.53

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Solution

The fourth proportional to 21,922.87, 32,880.70 and 9,439.53 is: 14,157.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922.87 : 32,880.70 = 9,439.53 : x
  2. Step 2: Convert to fraction form
    21,922.87/32,880.70 = 9,439.53/x
  3. Step 3: Cross multiply
    21,922.87x = 32,880.70 × 9,439.53
  4. Step 4: Simplify right side
    21,922.87x = 310,378,354.07
  5. Step 5: Solve for x
    x = 310,378,354.07/21,922.87
  6. Step 6: Final answer
    x = 14,157.74

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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.