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Finding the Fourth Proportional to 13,633, 18,813.36 and 7,583.20

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Solution

The fourth proportional to 13,633, 18,813.36 and 7,583.20 is: 10,464.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633 : 18,813.36 = 7,583.20 : x
  2. Step 2: Convert to fraction form
    13,633/18,813.36 = 7,583.20/x
  3. Step 3: Cross multiply
    13,633x = 18,813.36 × 7,583.20
  4. Step 4: Simplify right side
    13,633x = 142,665,471.55
  5. Step 5: Solve for x
    x = 142,665,471.55/13,633
  6. Step 6: Final answer
    x = 10,464.72

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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.