Home / 11,520.81-15,898.68-6,805.35

Finding the Fourth Proportional to 11,520.81, 15,898.68 and 6,805.35

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Solution

The fourth proportional to 11,520.81, 15,898.68 and 6,805.35 is: 9,391.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.81 : 15,898.68 = 6,805.35 : x
  2. Step 2: Convert to fraction form
    11,520.81/15,898.68 = 6,805.35/x
  3. Step 3: Cross multiply
    11,520.81x = 15,898.68 × 6,805.35
  4. Step 4: Simplify right side
    11,520.81x = 108,196,081.94
  5. Step 5: Solve for x
    x = 108,196,081.94/11,520.81
  6. Step 6: Final answer
    x = 9,391.36

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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.