Home / 15,174.30-20,940.63-8,460.36

Finding the Fourth Proportional to 15,174.30, 20,940.63 and 8,460.36

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Solution

The fourth proportional to 15,174.30, 20,940.63 and 8,460.36 is: 11,675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.30 : 20,940.63 = 8,460.36 : x
  2. Step 2: Convert to fraction form
    15,174.30/20,940.63 = 8,460.36/x
  3. Step 3: Cross multiply
    15,174.30x = 20,940.63 × 8,460.36
  4. Step 4: Simplify right side
    15,174.30x = 177,165,284.29
  5. Step 5: Solve for x
    x = 177,165,284.29/15,174.30
  6. Step 6: Final answer
    x = 11,675.35

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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.