Home / 28,281.20-42,423.48-7,504.64

Finding the Fourth Proportional to 28,281.20, 42,423.48 and 7,504.64

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Solution

The fourth proportional to 28,281.20, 42,423.48 and 7,504.64 is: 11,257.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.20 : 42,423.48 = 7,504.64 : x
  2. Step 2: Convert to fraction form
    28,281.20/42,423.48 = 7,504.64/x
  3. Step 3: Cross multiply
    28,281.20x = 42,423.48 × 7,504.64
  4. Step 4: Simplify right side
    28,281.20x = 318,372,944.95
  5. Step 5: Solve for x
    x = 318,372,944.95/28,281.20
  6. Step 6: Final answer
    x = 11,257.41

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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.