Home / 20,350.87-28,056.63-17,398.42

Finding the Fourth Proportional to 20,350.87, 28,056.63 and 17,398.42

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Solution

The fourth proportional to 20,350.87, 28,056.63 and 17,398.42 is: 23,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.87 : 28,056.63 = 17,398.42 : x
  2. Step 2: Convert to fraction form
    20,350.87/28,056.63 = 17,398.42/x
  3. Step 3: Cross multiply
    20,350.87x = 28,056.63 × 17,398.42
  4. Step 4: Simplify right side
    20,350.87x = 488,141,032.52
  5. Step 5: Solve for x
    x = 488,141,032.52/20,350.87
  6. Step 6: Final answer
    x = 23,986.25

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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.