Home / 28,243.40-42,351.42-8,518.28

Finding the Fourth Proportional to 28,243.40, 42,351.42 and 8,518.28

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Solution

The fourth proportional to 28,243.40, 42,351.42 and 8,518.28 is: 12,773.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.40 : 42,351.42 = 8,518.28 : x
  2. Step 2: Convert to fraction form
    28,243.40/42,351.42 = 8,518.28/x
  3. Step 3: Cross multiply
    28,243.40x = 42,351.42 × 8,518.28
  4. Step 4: Simplify right side
    28,243.40x = 360,761,253.96
  5. Step 5: Solve for x
    x = 360,761,253.96/28,243.40
  6. Step 6: Final answer
    x = 12,773.29

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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.