Home / 20,657.74-28,507.61-11,706.95

Finding the Fourth Proportional to 20,657.74, 28,507.61 and 11,706.95

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Solution

The fourth proportional to 20,657.74, 28,507.61 and 11,706.95 is: 16,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.74 : 28,507.61 = 11,706.95 : x
  2. Step 2: Convert to fraction form
    20,657.74/28,507.61 = 11,706.95/x
  3. Step 3: Cross multiply
    20,657.74x = 28,507.61 × 11,706.95
  4. Step 4: Simplify right side
    20,657.74x = 333,737,164.89
  5. Step 5: Solve for x
    x = 333,737,164.89/20,657.74
  6. Step 6: Final answer
    x = 16,155.55

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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.