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Finding the Fourth Proportional to 18,834, 25,990.90 and 10,336.17

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Solution

The fourth proportional to 18,834, 25,990.90 and 10,336.17 is: 14,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834 : 25,990.90 = 10,336.17 : x
  2. Step 2: Convert to fraction form
    18,834/25,990.90 = 10,336.17/x
  3. Step 3: Cross multiply
    18,834x = 25,990.90 × 10,336.17
  4. Step 4: Simplify right side
    18,834x = 268,646,360.85
  5. Step 5: Solve for x
    x = 268,646,360.85/18,834
  6. Step 6: Final answer
    x = 14,263.90

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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.