Home / 28,289.61-42,442.36-8,299.58

Finding the Fourth Proportional to 28,289.61, 42,442.36 and 8,299.58

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Solution

The fourth proportional to 28,289.61, 42,442.36 and 8,299.58 is: 12,451.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.61 : 42,442.36 = 8,299.58 : x
  2. Step 2: Convert to fraction form
    28,289.61/42,442.36 = 8,299.58/x
  3. Step 3: Cross multiply
    28,289.61x = 42,442.36 × 8,299.58
  4. Step 4: Simplify right side
    28,289.61x = 352,253,508.50
  5. Step 5: Solve for x
    x = 352,253,508.50/28,289.61
  6. Step 6: Final answer
    x = 12,451.69

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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.