Home / 15,686.97-23,530.32-3,840.78

Finding the Fourth Proportional to 15,686.97, 23,530.32 and 3,840.78

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Solution

The fourth proportional to 15,686.97, 23,530.32 and 3,840.78 is: 5,761.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686.97 : 23,530.32 = 3,840.78 : x
  2. Step 2: Convert to fraction form
    15,686.97/23,530.32 = 3,840.78/x
  3. Step 3: Cross multiply
    15,686.97x = 23,530.32 × 3,840.78
  4. Step 4: Simplify right side
    15,686.97x = 90,374,782.45
  5. Step 5: Solve for x
    x = 90,374,782.45/15,686.97
  6. Step 6: Final answer
    x = 5,761.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.