Home / 20,657.25-28,505.34-11,706.12

Finding the Fourth Proportional to 20,657.25, 28,505.34 and 11,706.12

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Solution

The fourth proportional to 20,657.25, 28,505.34 and 11,706.12 is: 16,153.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.25 : 28,505.34 = 11,706.12 : x
  2. Step 2: Convert to fraction form
    20,657.25/28,505.34 = 11,706.12/x
  3. Step 3: Cross multiply
    20,657.25x = 28,505.34 × 11,706.12
  4. Step 4: Simplify right side
    20,657.25x = 333,686,930.68
  5. Step 5: Solve for x
    x = 333,686,930.68/20,657.25
  6. Step 6: Final answer
    x = 16,153.50

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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.