Home / 55,717.21-83,588.12-20,656.87

Finding the Fourth Proportional to 55,717.21, 83,588.12 and 20,656.87

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Solution

The fourth proportional to 55,717.21, 83,588.12 and 20,656.87 is: 30,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,717.21 : 83,588.12 = 20,656.87 : x
  2. Step 2: Convert to fraction form
    55,717.21/83,588.12 = 20,656.87/x
  3. Step 3: Cross multiply
    55,717.21x = 83,588.12 × 20,656.87
  4. Step 4: Simplify right side
    55,717.21x = 1,726,668,616.13
  5. Step 5: Solve for x
    x = 1,726,668,616.13/55,717.21
  6. Step 6: Final answer
    x = 30,989.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.