Home / 13,981.74-20,972.61-5,097.74

Finding the Fourth Proportional to 13,981.74, 20,972.61 and 5,097.74

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Solution

The fourth proportional to 13,981.74, 20,972.61 and 5,097.74 is: 7,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.74 : 20,972.61 = 5,097.74 : x
  2. Step 2: Convert to fraction form
    13,981.74/20,972.61 = 5,097.74/x
  3. Step 3: Cross multiply
    13,981.74x = 20,972.61 × 5,097.74
  4. Step 4: Simplify right side
    13,981.74x = 106,912,847.73
  5. Step 5: Solve for x
    x = 106,912,847.73/13,981.74
  6. Step 6: Final answer
    x = 7,646.60

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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.