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Finding the Fourth Proportional to 20,600.54, 30,900.81 and 9,503.95

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Solution

The fourth proportional to 20,600.54, 30,900.81 and 9,503.95 is: 14,255.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.54 : 30,900.81 = 9,503.95 : x
  2. Step 2: Convert to fraction form
    20,600.54/30,900.81 = 9,503.95/x
  3. Step 3: Cross multiply
    20,600.54x = 30,900.81 × 9,503.95
  4. Step 4: Simplify right side
    20,600.54x = 293,679,675.95
  5. Step 5: Solve for x
    x = 293,679,675.95/20,600.54
  6. Step 6: Final answer
    x = 14,255.92

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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.