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Finding the Fourth Proportional to 13,050.64, 18,010.77 and 7,385.39

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Solution

The fourth proportional to 13,050.64, 18,010.77 and 7,385.39 is: 10,192.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,050.64 : 18,010.77 = 7,385.39 : x
  2. Step 2: Convert to fraction form
    13,050.64/18,010.77 = 7,385.39/x
  3. Step 3: Cross multiply
    13,050.64x = 18,010.77 × 7,385.39
  4. Step 4: Simplify right side
    13,050.64x = 133,016,470.60
  5. Step 5: Solve for x
    x = 133,016,470.60/13,050.64
  6. Step 6: Final answer
    x = 10,192.33

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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.