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Finding the Fourth Proportional to 8,898.26, 13,253.22 and 8,429.81

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Solution

The fourth proportional to 8,898.26, 13,253.22 and 8,429.81 is: 12,555.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.26 : 13,253.22 = 8,429.81 : x
  2. Step 2: Convert to fraction form
    8,898.26/13,253.22 = 8,429.81/x
  3. Step 3: Cross multiply
    8,898.26x = 13,253.22 × 8,429.81
  4. Step 4: Simplify right side
    8,898.26x = 111,722,060.22
  5. Step 5: Solve for x
    x = 111,722,060.22/8,898.26
  6. Step 6: Final answer
    x = 12,555.50

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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.