Home / 28,020.20-42,030.44-8,299.12

Finding the Fourth Proportional to 28,020.20, 42,030.44 and 8,299.12

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Solution

The fourth proportional to 28,020.20, 42,030.44 and 8,299.12 is: 12,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.20 : 42,030.44 = 8,299.12 : x
  2. Step 2: Convert to fraction form
    28,020.20/42,030.44 = 8,299.12/x
  3. Step 3: Cross multiply
    28,020.20x = 42,030.44 × 8,299.12
  4. Step 4: Simplify right side
    28,020.20x = 348,815,665.21
  5. Step 5: Solve for x
    x = 348,815,665.21/28,020.20
  6. Step 6: Final answer
    x = 12,448.72

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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.