Home / 11,517.99-15,890.76-7,541.30

Finding the Fourth Proportional to 11,517.99, 15,890.76 and 7,541.30

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Solution

The fourth proportional to 11,517.99, 15,890.76 and 7,541.30 is: 10,404.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,517.99 : 15,890.76 = 7,541.30 : x
  2. Step 2: Convert to fraction form
    11,517.99/15,890.76 = 7,541.30/x
  3. Step 3: Cross multiply
    11,517.99x = 15,890.76 × 7,541.30
  4. Step 4: Simplify right side
    11,517.99x = 119,836,908.93
  5. Step 5: Solve for x
    x = 119,836,908.93/11,517.99
  6. Step 6: Final answer
    x = 10,404.32

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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.