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Finding the Fourth Proportional to 21,611.84, 32,424.48 and 18,348.80

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Solution

The fourth proportional to 21,611.84, 32,424.48 and 18,348.80 is: 27,528.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.84 : 32,424.48 = 18,348.80 : x
  2. Step 2: Convert to fraction form
    21,611.84/32,424.48 = 18,348.80/x
  3. Step 3: Cross multiply
    21,611.84x = 32,424.48 × 18,348.80
  4. Step 4: Simplify right side
    21,611.84x = 594,950,298.62
  5. Step 5: Solve for x
    x = 594,950,298.62/21,611.84
  6. Step 6: Final answer
    x = 27,528.91

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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.