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Finding the Fourth Proportional to 28,294.56, 42,442.08 and 7,518.24

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Solution

The fourth proportional to 28,294.56, 42,442.08 and 7,518.24 is: 11,277.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,294.56 : 42,442.08 = 7,518.24 : x
  2. Step 2: Convert to fraction form
    28,294.56/42,442.08 = 7,518.24/x
  3. Step 3: Cross multiply
    28,294.56x = 42,442.08 × 7,518.24
  4. Step 4: Simplify right side
    28,294.56x = 319,089,743.54
  5. Step 5: Solve for x
    x = 319,089,743.54/28,294.56
  6. Step 6: Final answer
    x = 11,277.42

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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.