Home / 18,250.54-25,135.32-15,731.68

Finding the Fourth Proportional to 18,250.54, 25,135.32 and 15,731.68

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Solution

The fourth proportional to 18,250.54, 25,135.32 and 15,731.68 is: 21,666.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250.54 : 25,135.32 = 15,731.68 : x
  2. Step 2: Convert to fraction form
    18,250.54/25,135.32 = 15,731.68/x
  3. Step 3: Cross multiply
    18,250.54x = 25,135.32 × 15,731.68
  4. Step 4: Simplify right side
    18,250.54x = 395,420,810.94
  5. Step 5: Solve for x
    x = 395,420,810.94/18,250.54
  6. Step 6: Final answer
    x = 21,666.25

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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.