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Finding the Fourth Proportional to 28,015.12, 42,022.68 and 7,237

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Solution

The fourth proportional to 28,015.12, 42,022.68 and 7,237 is: 10,855.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.12 : 42,022.68 = 7,237 : x
  2. Step 2: Convert to fraction form
    28,015.12/42,022.68 = 7,237/x
  3. Step 3: Cross multiply
    28,015.12x = 42,022.68 × 7,237
  4. Step 4: Simplify right side
    28,015.12x = 304,118,135.16
  5. Step 5: Solve for x
    x = 304,118,135.16/28,015.12
  6. Step 6: Final answer
    x = 10,855.50

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Similar ratio
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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.