Home / 9,128.24-13,686.63-4,191.54

Finding the Fourth Proportional to 9,128.24, 13,686.63 and 4,191.54

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Solution

The fourth proportional to 9,128.24, 13,686.63 and 4,191.54 is: 6,284.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.24 : 13,686.63 = 4,191.54 : x
  2. Step 2: Convert to fraction form
    9,128.24/13,686.63 = 4,191.54/x
  3. Step 3: Cross multiply
    9,128.24x = 13,686.63 × 4,191.54
  4. Step 4: Simplify right side
    9,128.24x = 57,368,057.11
  5. Step 5: Solve for x
    x = 57,368,057.11/9,128.24
  6. Step 6: Final answer
    x = 6,284.68

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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.