Home / 20,345.87-28,049.73-17,393.42

Finding the Fourth Proportional to 20,345.87, 28,049.73 and 17,393.42

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Solution

The fourth proportional to 20,345.87, 28,049.73 and 17,393.42 is: 23,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.87 : 28,049.73 = 17,393.42 : x
  2. Step 2: Convert to fraction form
    20,345.87/28,049.73 = 17,393.42/x
  3. Step 3: Cross multiply
    20,345.87x = 28,049.73 × 17,393.42
  4. Step 4: Simplify right side
    20,345.87x = 487,880,594.53
  5. Step 5: Solve for x
    x = 487,880,594.53/20,345.87
  6. Step 6: Final answer
    x = 23,979.35

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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.