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Finding the Fourth Proportional to 25,990.37, 38,990.36 and 8,225.50

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Solution

The fourth proportional to 25,990.37, 38,990.36 and 8,225.50 is: 12,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.37 : 38,990.36 = 8,225.50 : x
  2. Step 2: Convert to fraction form
    25,990.37/38,990.36 = 8,225.50/x
  3. Step 3: Cross multiply
    25,990.37x = 38,990.36 × 8,225.50
  4. Step 4: Simplify right side
    25,990.37x = 320,715,206.18
  5. Step 5: Solve for x
    x = 320,715,206.18/25,990.37
  6. Step 6: Final answer
    x = 12,339.77

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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.