Home / 20,211.06-27,890.88-11,259.30

Finding the Fourth Proportional to 20,211.06, 27,890.88 and 11,259.30

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Solution

The fourth proportional to 20,211.06, 27,890.88 and 11,259.30 is: 15,537.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.06 : 27,890.88 = 11,259.30 : x
  2. Step 2: Convert to fraction form
    20,211.06/27,890.88 = 11,259.30/x
  3. Step 3: Cross multiply
    20,211.06x = 27,890.88 × 11,259.30
  4. Step 4: Simplify right side
    20,211.06x = 314,031,785.18
  5. Step 5: Solve for x
    x = 314,031,785.18/20,211.06
  6. Step 6: Final answer
    x = 15,537.62

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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.