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Finding the Fourth Proportional to 13,442.55, 18,550.95 and 7,393.05

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Solution

The fourth proportional to 13,442.55, 18,550.95 and 7,393.05 is: 10,202.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.55 : 18,550.95 = 7,393.05 : x
  2. Step 2: Convert to fraction form
    13,442.55/18,550.95 = 7,393.05/x
  3. Step 3: Cross multiply
    13,442.55x = 18,550.95 × 7,393.05
  4. Step 4: Simplify right side
    13,442.55x = 137,148,100.90
  5. Step 5: Solve for x
    x = 137,148,100.90/13,442.55
  6. Step 6: Final answer
    x = 10,202.54

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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.