Home / 20,220.30-27,903.64-11,267.61

Finding the Fourth Proportional to 20,220.30, 27,903.64 and 11,267.61

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Solution

The fourth proportional to 20,220.30, 27,903.64 and 11,267.61 is: 15,549.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.30 : 27,903.64 = 11,267.61 : x
  2. Step 2: Convert to fraction form
    20,220.30/27,903.64 = 11,267.61/x
  3. Step 3: Cross multiply
    20,220.30x = 27,903.64 × 11,267.61
  4. Step 4: Simplify right side
    20,220.30x = 314,407,276.76
  5. Step 5: Solve for x
    x = 314,407,276.76/20,220.30
  6. Step 6: Final answer
    x = 15,549.09

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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.