Home / 20,442.86-30,685.73-18,117.74

Finding the Fourth Proportional to 20,442.86, 30,685.73 and 18,117.74

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Solution

The fourth proportional to 20,442.86, 30,685.73 and 18,117.74 is: 27,195.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.86 : 30,685.73 = 18,117.74 : x
  2. Step 2: Convert to fraction form
    20,442.86/30,685.73 = 18,117.74/x
  3. Step 3: Cross multiply
    20,442.86x = 30,685.73 × 18,117.74
  4. Step 4: Simplify right side
    20,442.86x = 555,955,969.72
  5. Step 5: Solve for x
    x = 555,955,969.72/20,442.86
  6. Step 6: Final answer
    x = 27,195.61

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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.