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Finding the Fourth Proportional to 13,393.71, 18,484.10 and 8,089.31

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Solution

The fourth proportional to 13,393.71, 18,484.10 and 8,089.31 is: 11,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.71 : 18,484.10 = 8,089.31 : x
  2. Step 2: Convert to fraction form
    13,393.71/18,484.10 = 8,089.31/x
  3. Step 3: Cross multiply
    13,393.71x = 18,484.10 × 8,089.31
  4. Step 4: Simplify right side
    13,393.71x = 149,523,482.10
  5. Step 5: Solve for x
    x = 149,523,482.10/13,393.71
  6. Step 6: Final answer
    x = 11,163.71

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Double scale
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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.