Home / 20,522.13-28,320.60-11,090.76

Finding the Fourth Proportional to 20,522.13, 28,320.60 and 11,090.76

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Solution

The fourth proportional to 20,522.13, 28,320.60 and 11,090.76 is: 15,305.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.13 : 28,320.60 = 11,090.76 : x
  2. Step 2: Convert to fraction form
    20,522.13/28,320.60 = 11,090.76/x
  3. Step 3: Cross multiply
    20,522.13x = 28,320.60 × 11,090.76
  4. Step 4: Simplify right side
    20,522.13x = 314,096,977.66
  5. Step 5: Solve for x
    x = 314,096,977.66/20,522.13
  6. Step 6: Final answer
    x = 15,305.28

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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.