Home / 20,507.62-28,301.04-11,555.44

Finding the Fourth Proportional to 20,507.62, 28,301.04 and 11,555.44

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Solution

The fourth proportional to 20,507.62, 28,301.04 and 11,555.44 is: 15,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.62 : 28,301.04 = 11,555.44 : x
  2. Step 2: Convert to fraction form
    20,507.62/28,301.04 = 11,555.44/x
  3. Step 3: Cross multiply
    20,507.62x = 28,301.04 × 11,555.44
  4. Step 4: Simplify right side
    20,507.62x = 327,030,969.66
  5. Step 5: Solve for x
    x = 327,030,969.66/20,507.62
  6. Step 6: Final answer
    x = 15,946.80

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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.