Home / 18,670.31-25,759.52-11,112.86

Finding the Fourth Proportional to 18,670.31, 25,759.52 and 11,112.86

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Solution

The fourth proportional to 18,670.31, 25,759.52 and 11,112.86 is: 15,332.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.31 : 25,759.52 = 11,112.86 : x
  2. Step 2: Convert to fraction form
    18,670.31/25,759.52 = 11,112.86/x
  3. Step 3: Cross multiply
    18,670.31x = 25,759.52 × 11,112.86
  4. Step 4: Simplify right side
    18,670.31x = 286,261,989.93
  5. Step 5: Solve for x
    x = 286,261,989.93/18,670.31
  6. Step 6: Final answer
    x = 15,332.47

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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.