Home / 20,729.13-28,606.55-11,298.09

Finding the Fourth Proportional to 20,729.13, 28,606.55 and 11,298.09

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Solution

The fourth proportional to 20,729.13, 28,606.55 and 11,298.09 is: 15,591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.13 : 28,606.55 = 11,298.09 : x
  2. Step 2: Convert to fraction form
    20,729.13/28,606.55 = 11,298.09/x
  3. Step 3: Cross multiply
    20,729.13x = 28,606.55 × 11,298.09
  4. Step 4: Simplify right side
    20,729.13x = 323,199,320.00
  5. Step 5: Solve for x
    x = 323,199,320.00/20,729.13
  6. Step 6: Final answer
    x = 15,591.55

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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.