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Finding the Fourth Proportional to 13,423.58, 18,544.43 and 8,835.17

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Solution

The fourth proportional to 13,423.58, 18,544.43 and 8,835.17 is: 12,205.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.58 : 18,544.43 = 8,835.17 : x
  2. Step 2: Convert to fraction form
    13,423.58/18,544.43 = 8,835.17/x
  3. Step 3: Cross multiply
    13,423.58x = 18,544.43 × 8,835.17
  4. Step 4: Simplify right side
    13,423.58x = 163,843,215.88
  5. Step 5: Solve for x
    x = 163,843,215.88/13,423.58
  6. Step 6: Final answer
    x = 12,205.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.