Home / 28,020.87-42,031.58-8,299.53

Finding the Fourth Proportional to 28,020.87, 42,031.58 and 8,299.53

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Solution

The fourth proportional to 28,020.87, 42,031.58 and 8,299.53 is: 12,449.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.87 : 42,031.58 = 8,299.53 : x
  2. Step 2: Convert to fraction form
    28,020.87/42,031.58 = 8,299.53/x
  3. Step 3: Cross multiply
    28,020.87x = 42,031.58 × 8,299.53
  4. Step 4: Simplify right side
    28,020.87x = 348,842,317.66
  5. Step 5: Solve for x
    x = 348,842,317.66/28,020.87
  6. Step 6: Final answer
    x = 12,449.37

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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.