Home / 15,167.16-20,930.40-8,453.36

Finding the Fourth Proportional to 15,167.16, 20,930.40 and 8,453.36

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Solution

The fourth proportional to 15,167.16, 20,930.40 and 8,453.36 is: 11,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.16 : 20,930.40 = 8,453.36 : x
  2. Step 2: Convert to fraction form
    15,167.16/20,930.40 = 8,453.36/x
  3. Step 3: Cross multiply
    15,167.16x = 20,930.40 × 8,453.36
  4. Step 4: Simplify right side
    15,167.16x = 176,932,206.14
  5. Step 5: Solve for x
    x = 176,932,206.14/15,167.16
  6. Step 6: Final answer
    x = 11,665.48

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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.