Home / 13,981.32-20,974.14-5,097.40

Finding the Fourth Proportional to 13,981.32, 20,974.14 and 5,097.40

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Solution

The fourth proportional to 13,981.32, 20,974.14 and 5,097.40 is: 7,646.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.32 : 20,974.14 = 5,097.40 : x
  2. Step 2: Convert to fraction form
    13,981.32/20,974.14 = 5,097.40/x
  3. Step 3: Cross multiply
    13,981.32x = 20,974.14 × 5,097.40
  4. Step 4: Simplify right side
    13,981.32x = 106,913,581.24
  5. Step 5: Solve for x
    x = 106,913,581.24/13,981.32
  6. Step 6: Final answer
    x = 7,646.89

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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.