Home / 11,291.94-15,574.68-6,813.72

Finding the Fourth Proportional to 11,291.94, 15,574.68 and 6,813.72

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Solution

The fourth proportional to 11,291.94, 15,574.68 and 6,813.72 is: 9,397.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.94 : 15,574.68 = 6,813.72 : x
  2. Step 2: Convert to fraction form
    11,291.94/15,574.68 = 6,813.72/x
  3. Step 3: Cross multiply
    11,291.94x = 15,574.68 × 6,813.72
  4. Step 4: Simplify right side
    11,291.94x = 106,121,508.61
  5. Step 5: Solve for x
    x = 106,121,508.61/11,291.94
  6. Step 6: Final answer
    x = 9,397.99

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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.