Home / 15,175.35-20,939.31-8,460.45

Finding the Fourth Proportional to 15,175.35, 20,939.31 and 8,460.45

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Solution

The fourth proportional to 15,175.35, 20,939.31 and 8,460.45 is: 11,673.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.35 : 20,939.31 = 8,460.45 : x
  2. Step 2: Convert to fraction form
    15,175.35/20,939.31 = 8,460.45/x
  3. Step 3: Cross multiply
    15,175.35x = 20,939.31 × 8,460.45
  4. Step 4: Simplify right side
    15,175.35x = 177,155,985.29
  5. Step 5: Solve for x
    x = 177,155,985.29/15,175.35
  6. Step 6: Final answer
    x = 11,673.93

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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.