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Finding the Fourth Proportional to 18,423.60, 27,635.40 and 16,868.40

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Solution

The fourth proportional to 18,423.60, 27,635.40 and 16,868.40 is: 25,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.60 : 27,635.40 = 16,868.40 : x
  2. Step 2: Convert to fraction form
    18,423.60/27,635.40 = 16,868.40/x
  3. Step 3: Cross multiply
    18,423.60x = 27,635.40 × 16,868.40
  4. Step 4: Simplify right side
    18,423.60x = 466,164,981.36
  5. Step 5: Solve for x
    x = 466,164,981.36/18,423.60
  6. Step 6: Final answer
    x = 25,302.60

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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.