Home / 20,374.40-28,119.12-19,488.62

Finding the Fourth Proportional to 20,374.40, 28,119.12 and 19,488.62

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Solution

The fourth proportional to 20,374.40, 28,119.12 and 19,488.62 is: 26,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.40 : 28,119.12 = 19,488.62 : x
  2. Step 2: Convert to fraction form
    20,374.40/28,119.12 = 19,488.62/x
  3. Step 3: Cross multiply
    20,374.40x = 28,119.12 × 19,488.62
  4. Step 4: Simplify right side
    20,374.40x = 548,002,844.41
  5. Step 5: Solve for x
    x = 548,002,844.41/20,374.40
  6. Step 6: Final answer
    x = 26,896.64

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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.