Home / 20,087.87-27,721.48-11,475.19

Finding the Fourth Proportional to 20,087.87, 27,721.48 and 11,475.19

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Solution

The fourth proportional to 20,087.87, 27,721.48 and 11,475.19 is: 15,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.87 : 27,721.48 = 11,475.19 : x
  2. Step 2: Convert to fraction form
    20,087.87/27,721.48 = 11,475.19/x
  3. Step 3: Cross multiply
    20,087.87x = 27,721.48 × 11,475.19
  4. Step 4: Simplify right side
    20,087.87x = 318,109,345.09
  5. Step 5: Solve for x
    x = 318,109,345.09/20,087.87
  6. Step 6: Final answer
    x = 15,835.89

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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.