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Finding the Fourth Proportional to 13,336.76, 18,404.47 and 7,368.38

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Solution

The fourth proportional to 13,336.76, 18,404.47 and 7,368.38 is: 10,168.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,336.76 : 18,404.47 = 7,368.38 : x
  2. Step 2: Convert to fraction form
    13,336.76/18,404.47 = 7,368.38/x
  3. Step 3: Cross multiply
    13,336.76x = 18,404.47 × 7,368.38
  4. Step 4: Simplify right side
    13,336.76x = 135,611,128.66
  5. Step 5: Solve for x
    x = 135,611,128.66/13,336.76
  6. Step 6: Final answer
    x = 10,168.22

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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.