Home / 20,285.15-30,427.71-7,637.27

Finding the Fourth Proportional to 20,285.15, 30,427.71 and 7,637.27

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Solution

The fourth proportional to 20,285.15, 30,427.71 and 7,637.27 is: 11,455.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.15 : 30,427.71 = 7,637.27 : x
  2. Step 2: Convert to fraction form
    20,285.15/30,427.71 = 7,637.27/x
  3. Step 3: Cross multiply
    20,285.15x = 30,427.71 × 7,637.27
  4. Step 4: Simplify right side
    20,285.15x = 232,384,636.75
  5. Step 5: Solve for x
    x = 232,384,636.75/20,285.15
  6. Step 6: Final answer
    x = 11,455.90

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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.