Home / 20,130.24-27,780.23-11,177.31

Finding the Fourth Proportional to 20,130.24, 27,780.23 and 11,177.31

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Solution

The fourth proportional to 20,130.24, 27,780.23 and 11,177.31 is: 15,424.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.24 : 27,780.23 = 11,177.31 : x
  2. Step 2: Convert to fraction form
    20,130.24/27,780.23 = 11,177.31/x
  3. Step 3: Cross multiply
    20,130.24x = 27,780.23 × 11,177.31
  4. Step 4: Simplify right side
    20,130.24x = 310,508,242.58
  5. Step 5: Solve for x
    x = 310,508,242.58/20,130.24
  6. Step 6: Final answer
    x = 15,424.96

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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.