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Finding the Fourth Proportional to 13,469.13, 18,595.71 and 8,693.28

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Solution

The fourth proportional to 13,469.13, 18,595.71 and 8,693.28 is: 12,002.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,469.13 : 18,595.71 = 8,693.28 : x
  2. Step 2: Convert to fraction form
    13,469.13/18,595.71 = 8,693.28/x
  3. Step 3: Cross multiply
    13,469.13x = 18,595.71 × 8,693.28
  4. Step 4: Simplify right side
    13,469.13x = 161,657,713.83
  5. Step 5: Solve for x
    x = 161,657,713.83/13,469.13
  6. Step 6: Final answer
    x = 12,002.09

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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.