Home / 13,984.23-20,981.82-5,217.10

Finding the Fourth Proportional to 13,984.23, 20,981.82 and 5,217.10

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Solution

The fourth proportional to 13,984.23, 20,981.82 and 5,217.10 is: 7,827.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.23 : 20,981.82 = 5,217.10 : x
  2. Step 2: Convert to fraction form
    13,984.23/20,981.82 = 5,217.10/x
  3. Step 3: Cross multiply
    13,984.23x = 20,981.82 × 5,217.10
  4. Step 4: Simplify right side
    13,984.23x = 109,464,253.12
  5. Step 5: Solve for x
    x = 109,464,253.12/13,984.23
  6. Step 6: Final answer
    x = 7,827.69

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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.