Home / 15,175.84-20,940.53-8,460.50

Finding the Fourth Proportional to 15,175.84, 20,940.53 and 8,460.50

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Solution

The fourth proportional to 15,175.84, 20,940.53 and 8,460.50 is: 11,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.84 : 20,940.53 = 8,460.50 : x
  2. Step 2: Convert to fraction form
    15,175.84/20,940.53 = 8,460.50/x
  3. Step 3: Cross multiply
    15,175.84x = 20,940.53 × 8,460.50
  4. Step 4: Simplify right side
    15,175.84x = 177,167,324.85
  5. Step 5: Solve for x
    x = 177,167,324.85/15,175.84
  6. Step 6: Final answer
    x = 11,674.30

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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.