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Finding the Fourth Proportional to 28,357.12, 42,532.44 and 7,582.24

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Solution

The fourth proportional to 28,357.12, 42,532.44 and 7,582.24 is: 11,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.12 : 42,532.44 = 7,582.24 : x
  2. Step 2: Convert to fraction form
    28,357.12/42,532.44 = 7,582.24/x
  3. Step 3: Cross multiply
    28,357.12x = 42,532.44 × 7,582.24
  4. Step 4: Simplify right side
    28,357.12x = 322,491,167.87
  5. Step 5: Solve for x
    x = 322,491,167.87/28,357.12
  6. Step 6: Final answer
    x = 11,372.49

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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.