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Finding the Fourth Proportional to 13,276.62, 18,321 and 7,307.32

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Solution

The fourth proportional to 13,276.62, 18,321 and 7,307.32 is: 10,083.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.62 : 18,321 = 7,307.32 : x
  2. Step 2: Convert to fraction form
    13,276.62/18,321 = 7,307.32/x
  3. Step 3: Cross multiply
    13,276.62x = 18,321 × 7,307.32
  4. Step 4: Simplify right side
    13,276.62x = 133,877,409.72
  5. Step 5: Solve for x
    x = 133,877,409.72/13,276.62
  6. Step 6: Final answer
    x = 10,083.70

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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.