Home / 20,386.26-28,188.54-17,761.86

Finding the Fourth Proportional to 20,386.26, 28,188.54 and 17,761.86

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Solution

The fourth proportional to 20,386.26, 28,188.54 and 17,761.86 is: 24,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.26 : 28,188.54 = 17,761.86 : x
  2. Step 2: Convert to fraction form
    20,386.26/28,188.54 = 17,761.86/x
  3. Step 3: Cross multiply
    20,386.26x = 28,188.54 × 17,761.86
  4. Step 4: Simplify right side
    20,386.26x = 500,680,901.08
  5. Step 5: Solve for x
    x = 500,680,901.08/20,386.26
  6. Step 6: Final answer
    x = 24,559.72

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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.