Home / 20,076.90-30,115.70-5,285.26

Finding the Fourth Proportional to 20,076.90, 30,115.70 and 5,285.26

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Solution

The fourth proportional to 20,076.90, 30,115.70 and 5,285.26 is: 7,927.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.90 : 30,115.70 = 5,285.26 : x
  2. Step 2: Convert to fraction form
    20,076.90/30,115.70 = 5,285.26/x
  3. Step 3: Cross multiply
    20,076.90x = 30,115.70 × 5,285.26
  4. Step 4: Simplify right side
    20,076.90x = 159,169,304.58
  5. Step 5: Solve for x
    x = 159,169,304.58/20,076.90
  6. Step 6: Final answer
    x = 7,927.98

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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.