Home / 13,698.18-20,540.88-4,931.95

Finding the Fourth Proportional to 13,698.18, 20,540.88 and 4,931.95

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Solution

The fourth proportional to 13,698.18, 20,540.88 and 4,931.95 is: 7,395.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.18 : 20,540.88 = 4,931.95 : x
  2. Step 2: Convert to fraction form
    13,698.18/20,540.88 = 4,931.95/x
  3. Step 3: Cross multiply
    13,698.18x = 20,540.88 × 4,931.95
  4. Step 4: Simplify right side
    13,698.18x = 101,306,593.12
  5. Step 5: Solve for x
    x = 101,306,593.12/13,698.18
  6. Step 6: Final answer
    x = 7,395.62

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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.