Home / 13,897.20-20,845.89-3,508.95

Finding the Fourth Proportional to 13,897.20, 20,845.89 and 3,508.95

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Solution

The fourth proportional to 13,897.20, 20,845.89 and 3,508.95 is: 5,263.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.20 : 20,845.89 = 3,508.95 : x
  2. Step 2: Convert to fraction form
    13,897.20/20,845.89 = 3,508.95/x
  3. Step 3: Cross multiply
    13,897.20x = 20,845.89 × 3,508.95
  4. Step 4: Simplify right side
    13,897.20x = 73,147,185.72
  5. Step 5: Solve for x
    x = 73,147,185.72/13,897.20
  6. Step 6: Final answer
    x = 5,263.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.