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Finding the Fourth Proportional to 8,926.43, 13,376.45 and 8,427.18

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Solution

The fourth proportional to 8,926.43, 13,376.45 and 8,427.18 is: 12,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,926.43 : 13,376.45 = 8,427.18 : x
  2. Step 2: Convert to fraction form
    8,926.43/13,376.45 = 8,427.18/x
  3. Step 3: Cross multiply
    8,926.43x = 13,376.45 × 8,427.18
  4. Step 4: Simplify right side
    8,926.43x = 112,725,751.91
  5. Step 5: Solve for x
    x = 112,725,751.91/8,926.43
  6. Step 6: Final answer
    x = 12,628.31

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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.