Home / 20,215.33-27,897.19-11,263.15

Finding the Fourth Proportional to 20,215.33, 27,897.19 and 11,263.15

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Solution

The fourth proportional to 20,215.33, 27,897.19 and 11,263.15 is: 15,543.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.33 : 27,897.19 = 11,263.15 : x
  2. Step 2: Convert to fraction form
    20,215.33/27,897.19 = 11,263.15/x
  3. Step 3: Cross multiply
    20,215.33x = 27,897.19 × 11,263.15
  4. Step 4: Simplify right side
    20,215.33x = 314,210,235.55
  5. Step 5: Solve for x
    x = 314,210,235.55/20,215.33
  6. Step 6: Final answer
    x = 15,543.17

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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.