Home / 20,844.81-28,765.60-11,284.46

Finding the Fourth Proportional to 20,844.81, 28,765.60 and 11,284.46

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Solution

The fourth proportional to 20,844.81, 28,765.60 and 11,284.46 is: 15,572.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.81 : 28,765.60 = 11,284.46 : x
  2. Step 2: Convert to fraction form
    20,844.81/28,765.60 = 11,284.46/x
  3. Step 3: Cross multiply
    20,844.81x = 28,765.60 × 11,284.46
  4. Step 4: Simplify right side
    20,844.81x = 324,604,384.02
  5. Step 5: Solve for x
    x = 324,604,384.02/20,844.81
  6. Step 6: Final answer
    x = 15,572.44

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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.