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Finding the Fourth Proportional to 28,343.84, 42,515.82 and 7,567.28

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Solution

The fourth proportional to 28,343.84, 42,515.82 and 7,567.28 is: 11,350.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.84 : 42,515.82 = 7,567.28 : x
  2. Step 2: Convert to fraction form
    28,343.84/42,515.82 = 7,567.28/x
  3. Step 3: Cross multiply
    28,343.84x = 42,515.82 × 7,567.28
  4. Step 4: Simplify right side
    28,343.84x = 321,729,114.37
  5. Step 5: Solve for x
    x = 321,729,114.37/28,343.84
  6. Step 6: Final answer
    x = 11,350.94

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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.