Home / 11,356.79-15,668.01-8,379.72

Finding the Fourth Proportional to 11,356.79, 15,668.01 and 8,379.72

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Solution

The fourth proportional to 11,356.79, 15,668.01 and 8,379.72 is: 11,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.79 : 15,668.01 = 8,379.72 : x
  2. Step 2: Convert to fraction form
    11,356.79/15,668.01 = 8,379.72/x
  3. Step 3: Cross multiply
    11,356.79x = 15,668.01 × 8,379.72
  4. Step 4: Simplify right side
    11,356.79x = 131,293,536.76
  5. Step 5: Solve for x
    x = 131,293,536.76/11,356.79
  6. Step 6: Final answer
    x = 11,560.80

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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.