Home / 20,285.15-27,993.30-11,332.62

Finding the Fourth Proportional to 20,285.15, 27,993.30 and 11,332.62

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Solution

The fourth proportional to 20,285.15, 27,993.30 and 11,332.62 is: 15,638.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.15 : 27,993.30 = 11,332.62 : x
  2. Step 2: Convert to fraction form
    20,285.15/27,993.30 = 11,332.62/x
  3. Step 3: Cross multiply
    20,285.15x = 27,993.30 × 11,332.62
  4. Step 4: Simplify right side
    20,285.15x = 317,237,529.76
  5. Step 5: Solve for x
    x = 317,237,529.76/20,285.15
  6. Step 6: Final answer
    x = 15,638.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.