Home / 20,417.64-28,177.19-11,918.44

Finding the Fourth Proportional to 20,417.64, 28,177.19 and 11,918.44

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Solution

The fourth proportional to 20,417.64, 28,177.19 and 11,918.44 is: 16,447.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.64 : 28,177.19 = 11,918.44 : x
  2. Step 2: Convert to fraction form
    20,417.64/28,177.19 = 11,918.44/x
  3. Step 3: Cross multiply
    20,417.64x = 28,177.19 × 11,918.44
  4. Step 4: Simplify right side
    20,417.64x = 335,828,148.38
  5. Step 5: Solve for x
    x = 335,828,148.38/20,417.64
  6. Step 6: Final answer
    x = 16,447.94

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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.