Home / 13,538.80-20,308.40-4,773.79

Finding the Fourth Proportional to 13,538.80, 20,308.40 and 4,773.79

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Solution

The fourth proportional to 13,538.80, 20,308.40 and 4,773.79 is: 7,160.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.80 : 20,308.40 = 4,773.79 : x
  2. Step 2: Convert to fraction form
    13,538.80/20,308.40 = 4,773.79/x
  3. Step 3: Cross multiply
    13,538.80x = 20,308.40 × 4,773.79
  4. Step 4: Simplify right side
    13,538.80x = 96,948,036.84
  5. Step 5: Solve for x
    x = 96,948,036.84/13,538.80
  6. Step 6: Final answer
    x = 7,160.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.