Home / 13,540.98-18,685.77-7,490.86

Finding the Fourth Proportional to 13,540.98, 18,685.77 and 7,490.86

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Solution

The fourth proportional to 13,540.98, 18,685.77 and 7,490.86 is: 10,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.98 : 18,685.77 = 7,490.86 : x
  2. Step 2: Convert to fraction form
    13,540.98/18,685.77 = 7,490.86/x
  3. Step 3: Cross multiply
    13,540.98x = 18,685.77 × 7,490.86
  4. Step 4: Simplify right side
    13,540.98x = 139,972,487.06
  5. Step 5: Solve for x
    x = 139,972,487.06/13,540.98
  6. Step 6: Final answer
    x = 10,336.95

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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.