Home / 20,130.33-27,776.90-11,177.91

Finding the Fourth Proportional to 20,130.33, 27,776.90 and 11,177.91

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Solution

The fourth proportional to 20,130.33, 27,776.90 and 11,177.91 is: 15,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.33 : 27,776.90 = 11,177.91 : x
  2. Step 2: Convert to fraction form
    20,130.33/27,776.90 = 11,177.91/x
  3. Step 3: Cross multiply
    20,130.33x = 27,776.90 × 11,177.91
  4. Step 4: Simplify right side
    20,130.33x = 310,487,632.39
  5. Step 5: Solve for x
    x = 310,487,632.39/20,130.33
  6. Step 6: Final answer
    x = 15,423.87

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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.