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Finding the Fourth Proportional to 8,909.70, 13,364.55 and 6,836.10

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Solution

The fourth proportional to 8,909.70, 13,364.55 and 6,836.10 is: 10,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.70 : 13,364.55 = 6,836.10 : x
  2. Step 2: Convert to fraction form
    8,909.70/13,364.55 = 6,836.10/x
  3. Step 3: Cross multiply
    8,909.70x = 13,364.55 × 6,836.10
  4. Step 4: Simplify right side
    8,909.70x = 91,361,400.26
  5. Step 5: Solve for x
    x = 91,361,400.26/8,909.70
  6. Step 6: Final answer
    x = 10,254.15

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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.