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Finding the Fourth Proportional to 8,556.11, 12,718.71 and 8,303.86

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Solution

The fourth proportional to 8,556.11, 12,718.71 and 8,303.86 is: 12,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,556.11 : 12,718.71 = 8,303.86 : x
  2. Step 2: Convert to fraction form
    8,556.11/12,718.71 = 8,303.86/x
  3. Step 3: Cross multiply
    8,556.11x = 12,718.71 × 8,303.86
  4. Step 4: Simplify right side
    8,556.11x = 105,614,387.22
  5. Step 5: Solve for x
    x = 105,614,387.22/8,556.11
  6. Step 6: Final answer
    x = 12,343.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.