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Finding the Fourth Proportional to 21,797.53, 32,712.55 and 8,472.62

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Solution

The fourth proportional to 21,797.53, 32,712.55 and 8,472.62 is: 12,715.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.53 : 32,712.55 = 8,472.62 : x
  2. Step 2: Convert to fraction form
    21,797.53/32,712.55 = 8,472.62/x
  3. Step 3: Cross multiply
    21,797.53x = 32,712.55 × 8,472.62
  4. Step 4: Simplify right side
    21,797.53x = 277,161,065.98
  5. Step 5: Solve for x
    x = 277,161,065.98/21,797.53
  6. Step 6: Final answer
    x = 12,715.25

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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.