Home / 20,426.40-28,189.44-11,473.44

Finding the Fourth Proportional to 20,426.40, 28,189.44 and 11,473.44

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Solution

The fourth proportional to 20,426.40, 28,189.44 and 11,473.44 is: 15,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.40 : 28,189.44 = 11,473.44 : x
  2. Step 2: Convert to fraction form
    20,426.40/28,189.44 = 11,473.44/x
  3. Step 3: Cross multiply
    20,426.40x = 28,189.44 × 11,473.44
  4. Step 4: Simplify right side
    20,426.40x = 323,429,848.47
  5. Step 5: Solve for x
    x = 323,429,848.47/20,426.40
  6. Step 6: Final answer
    x = 15,833.91

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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.