Home / 20,077.05-27,705.59-11,579.53

Finding the Fourth Proportional to 20,077.05, 27,705.59 and 11,579.53

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Solution

The fourth proportional to 20,077.05, 27,705.59 and 11,579.53 is: 15,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.05 : 27,705.59 = 11,579.53 : x
  2. Step 2: Convert to fraction form
    20,077.05/27,705.59 = 11,579.53/x
  3. Step 3: Cross multiply
    20,077.05x = 27,705.59 × 11,579.53
  4. Step 4: Simplify right side
    20,077.05x = 320,817,710.57
  5. Step 5: Solve for x
    x = 320,817,710.57/20,077.05
  6. Step 6: Final answer
    x = 15,979.33

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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.