Home / 28,011.87-42,003.23-8,287.76

Finding the Fourth Proportional to 28,011.87, 42,003.23 and 8,287.76

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Solution

The fourth proportional to 28,011.87, 42,003.23 and 8,287.76 is: 12,427.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.87 : 42,003.23 = 8,287.76 : x
  2. Step 2: Convert to fraction form
    28,011.87/42,003.23 = 8,287.76/x
  3. Step 3: Cross multiply
    28,011.87x = 42,003.23 × 8,287.76
  4. Step 4: Simplify right side
    28,011.87x = 348,112,753.03
  5. Step 5: Solve for x
    x = 348,112,753.03/28,011.87
  6. Step 6: Final answer
    x = 12,427.33

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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.