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Finding the Fourth Proportional to 18,392.40, 25,381.80 and 12,023.10

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Solution

The fourth proportional to 18,392.40, 25,381.80 and 12,023.10 is: 16,592.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.40 : 25,381.80 = 12,023.10 : x
  2. Step 2: Convert to fraction form
    18,392.40/25,381.80 = 12,023.10/x
  3. Step 3: Cross multiply
    18,392.40x = 25,381.80 × 12,023.10
  4. Step 4: Simplify right side
    18,392.40x = 305,167,919.58
  5. Step 5: Solve for x
    x = 305,167,919.58/18,392.40
  6. Step 6: Final answer
    x = 16,592.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.