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Finding the Fourth Proportional to 28,355.92, 42,540.23 and 8,636.02

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Solution

The fourth proportional to 28,355.92, 42,540.23 and 8,636.02 is: 12,955.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.92 : 42,540.23 = 8,636.02 : x
  2. Step 2: Convert to fraction form
    28,355.92/42,540.23 = 8,636.02/x
  3. Step 3: Cross multiply
    28,355.92x = 42,540.23 × 8,636.02
  4. Step 4: Simplify right side
    28,355.92x = 367,378,192.32
  5. Step 5: Solve for x
    x = 367,378,192.32/28,355.92
  6. Step 6: Final answer
    x = 12,955.96

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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.