Home / 28,392.39-39,173.61-18,321.27

Finding the Fourth Proportional to 28,392.39, 39,173.61 and 18,321.27

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Solution

The fourth proportional to 28,392.39, 39,173.61 and 18,321.27 is: 25,278.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.39 : 39,173.61 = 18,321.27 : x
  2. Step 2: Convert to fraction form
    28,392.39/39,173.61 = 18,321.27/x
  3. Step 3: Cross multiply
    28,392.39x = 39,173.61 × 18,321.27
  4. Step 4: Simplify right side
    28,392.39x = 717,710,285.68
  5. Step 5: Solve for x
    x = 717,710,285.68/28,392.39
  6. Step 6: Final answer
    x = 25,278.26

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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.