Home / 11,391.24-15,704.28-7,615.02

Finding the Fourth Proportional to 11,391.24, 15,704.28 and 7,615.02

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Solution

The fourth proportional to 11,391.24, 15,704.28 and 7,615.02 is: 10,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.24 : 15,704.28 = 7,615.02 : x
  2. Step 2: Convert to fraction form
    11,391.24/15,704.28 = 7,615.02/x
  3. Step 3: Cross multiply
    11,391.24x = 15,704.28 × 7,615.02
  4. Step 4: Simplify right side
    11,391.24x = 119,588,406.29
  5. Step 5: Solve for x
    x = 119,588,406.29/11,391.24
  6. Step 6: Final answer
    x = 10,498.28

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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.