Home / 20,215.28-27,897.54-11,263.70

Finding the Fourth Proportional to 20,215.28, 27,897.54 and 11,263.70

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Solution

The fourth proportional to 20,215.28, 27,897.54 and 11,263.70 is: 15,544.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.28 : 27,897.54 = 11,263.70 : x
  2. Step 2: Convert to fraction form
    20,215.28/27,897.54 = 11,263.70/x
  3. Step 3: Cross multiply
    20,215.28x = 27,897.54 × 11,263.70
  4. Step 4: Simplify right side
    20,215.28x = 314,229,521.30
  5. Step 5: Solve for x
    x = 314,229,521.30/20,215.28
  6. Step 6: Final answer
    x = 15,544.16

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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.