Home / 20,854.72-28,715.60-19,182.88

Finding the Fourth Proportional to 20,854.72, 28,715.60 and 19,182.88

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Solution

The fourth proportional to 20,854.72, 28,715.60 and 19,182.88 is: 26,413.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.72 : 28,715.60 = 19,182.88 : x
  2. Step 2: Convert to fraction form
    20,854.72/28,715.60 = 19,182.88/x
  3. Step 3: Cross multiply
    20,854.72x = 28,715.60 × 19,182.88
  4. Step 4: Simplify right side
    20,854.72x = 550,847,908.93
  5. Step 5: Solve for x
    x = 550,847,908.93/20,854.72
  6. Step 6: Final answer
    x = 26,413.58

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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.