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Finding the Fourth Proportional to 8,695.26, 13,018.05 and 8,143.52

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Solution

The fourth proportional to 8,695.26, 13,018.05 and 8,143.52 is: 12,192.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.26 : 13,018.05 = 8,143.52 : x
  2. Step 2: Convert to fraction form
    8,695.26/13,018.05 = 8,143.52/x
  3. Step 3: Cross multiply
    8,695.26x = 13,018.05 × 8,143.52
  4. Step 4: Simplify right side
    8,695.26x = 106,012,685.45
  5. Step 5: Solve for x
    x = 106,012,685.45/8,695.26
  6. Step 6: Final answer
    x = 12,192.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.