Home / 28,077.70-42,116.46-19,285.96

Finding the Fourth Proportional to 28,077.70, 42,116.46 and 19,285.96

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Solution

The fourth proportional to 28,077.70, 42,116.46 and 19,285.96 is: 28,928.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.70 : 42,116.46 = 19,285.96 : x
  2. Step 2: Convert to fraction form
    28,077.70/42,116.46 = 19,285.96/x
  3. Step 3: Cross multiply
    28,077.70x = 42,116.46 × 19,285.96
  4. Step 4: Simplify right side
    28,077.70x = 812,256,362.90
  5. Step 5: Solve for x
    x = 812,256,362.90/28,077.70
  6. Step 6: Final answer
    x = 28,928.88

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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.