Home / 20,701.50-28,567.86-11,269.86

Finding the Fourth Proportional to 20,701.50, 28,567.86 and 11,269.86

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Solution

The fourth proportional to 20,701.50, 28,567.86 and 11,269.86 is: 15,552.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.50 : 28,567.86 = 11,269.86 : x
  2. Step 2: Convert to fraction form
    20,701.50/28,567.86 = 11,269.86/x
  3. Step 3: Cross multiply
    20,701.50x = 28,567.86 × 11,269.86
  4. Step 4: Simplify right side
    20,701.50x = 321,955,782.70
  5. Step 5: Solve for x
    x = 321,955,782.70/20,701.50
  6. Step 6: Final answer
    x = 15,552.29

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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.