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Finding the Fourth Proportional to 28,236.50, 42,343.95 and 9,511.50

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Solution

The fourth proportional to 28,236.50, 42,343.95 and 9,511.50 is: 14,263.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.50 : 42,343.95 = 9,511.50 : x
  2. Step 2: Convert to fraction form
    28,236.50/42,343.95 = 9,511.50/x
  3. Step 3: Cross multiply
    28,236.50x = 42,343.95 × 9,511.50
  4. Step 4: Simplify right side
    28,236.50x = 402,754,480.43
  5. Step 5: Solve for x
    x = 402,754,480.43/28,236.50
  6. Step 6: Final answer
    x = 14,263.61

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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.