Home / 10,630.80-15,940.35-5,085.54

Finding the Fourth Proportional to 10,630.80, 15,940.35 and 5,085.54

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Solution

The fourth proportional to 10,630.80, 15,940.35 and 5,085.54 is: 7,625.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,630.80 : 15,940.35 = 5,085.54 : x
  2. Step 2: Convert to fraction form
    10,630.80/15,940.35 = 5,085.54/x
  3. Step 3: Cross multiply
    10,630.80x = 15,940.35 × 5,085.54
  4. Step 4: Simplify right side
    10,630.80x = 81,065,287.54
  5. Step 5: Solve for x
    x = 81,065,287.54/10,630.80
  6. Step 6: Final answer
    x = 7,625.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.