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Finding the Fourth Proportional to 18,472.84, 27,809.08 and 16,865.80

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Solution

The fourth proportional to 18,472.84, 27,809.08 and 16,865.80 is: 25,389.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.84 : 27,809.08 = 16,865.80 : x
  2. Step 2: Convert to fraction form
    18,472.84/27,809.08 = 16,865.80/x
  3. Step 3: Cross multiply
    18,472.84x = 27,809.08 × 16,865.80
  4. Step 4: Simplify right side
    18,472.84x = 469,022,381.46
  5. Step 5: Solve for x
    x = 469,022,381.46/18,472.84
  6. Step 6: Final answer
    x = 25,389.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.