Home / 20,215.28-27,897.13-11,263.11

Finding the Fourth Proportional to 20,215.28, 27,897.13 and 11,263.11

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Solution

The fourth proportional to 20,215.28, 27,897.13 and 11,263.11 is: 15,543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.28 : 27,897.13 = 11,263.11 : x
  2. Step 2: Convert to fraction form
    20,215.28/27,897.13 = 11,263.11/x
  3. Step 3: Cross multiply
    20,215.28x = 27,897.13 × 11,263.11
  4. Step 4: Simplify right side
    20,215.28x = 314,208,443.87
  5. Step 5: Solve for x
    x = 314,208,443.87/20,215.28
  6. Step 6: Final answer
    x = 15,543.12

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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.