Home / 20,285.85-27,991.69-11,332.24

Finding the Fourth Proportional to 20,285.85, 27,991.69 and 11,332.24

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Solution

The fourth proportional to 20,285.85, 27,991.69 and 11,332.24 is: 15,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.85 : 27,991.69 = 11,332.24 : x
  2. Step 2: Convert to fraction form
    20,285.85/27,991.69 = 11,332.24/x
  3. Step 3: Cross multiply
    20,285.85x = 27,991.69 × 11,332.24
  4. Step 4: Simplify right side
    20,285.85x = 317,208,549.09
  5. Step 5: Solve for x
    x = 317,208,549.09/20,285.85
  6. Step 6: Final answer
    x = 15,636.94

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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.