Home / 13,981.82-20,966.45-4,117.64

Finding the Fourth Proportional to 13,981.82, 20,966.45 and 4,117.64

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Solution

The fourth proportional to 13,981.82, 20,966.45 and 4,117.64 is: 6,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.82 : 20,966.45 = 4,117.64 : x
  2. Step 2: Convert to fraction form
    13,981.82/20,966.45 = 4,117.64/x
  3. Step 3: Cross multiply
    13,981.82x = 20,966.45 × 4,117.64
  4. Step 4: Simplify right side
    13,981.82x = 86,332,167.76
  5. Step 5: Solve for x
    x = 86,332,167.76/13,981.82
  6. Step 6: Final answer
    x = 6,174.60

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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.