Home / 20,077.74-27,706.89-11,125.05

Finding the Fourth Proportional to 20,077.74, 27,706.89 and 11,125.05

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Solution

The fourth proportional to 20,077.74, 27,706.89 and 11,125.05 is: 15,352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.74 : 27,706.89 = 11,125.05 : x
  2. Step 2: Convert to fraction form
    20,077.74/27,706.89 = 11,125.05/x
  3. Step 3: Cross multiply
    20,077.74x = 27,706.89 × 11,125.05
  4. Step 4: Simplify right side
    20,077.74x = 308,240,474.41
  5. Step 5: Solve for x
    x = 308,240,474.41/20,077.74
  6. Step 6: Final answer
    x = 15,352.35

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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.