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Finding the Fourth Proportional to 13,317, 18,378.05 and 7,653.57

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Solution

The fourth proportional to 13,317, 18,378.05 and 7,653.57 is: 10,562.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317 : 18,378.05 = 7,653.57 : x
  2. Step 2: Convert to fraction form
    13,317/18,378.05 = 7,653.57/x
  3. Step 3: Cross multiply
    13,317x = 18,378.05 × 7,653.57
  4. Step 4: Simplify right side
    13,317x = 140,657,653.87
  5. Step 5: Solve for x
    x = 140,657,653.87/13,317
  6. Step 6: Final answer
    x = 10,562.26

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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.