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Finding the Fourth Proportional to 13,989.66, 20,984.49 and 4,627.16

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Solution

The fourth proportional to 13,989.66, 20,984.49 and 4,627.16 is: 6,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.66 : 20,984.49 = 4,627.16 : x
  2. Step 2: Convert to fraction form
    13,989.66/20,984.49 = 4,627.16/x
  3. Step 3: Cross multiply
    13,989.66x = 20,984.49 × 4,627.16
  4. Step 4: Simplify right side
    13,989.66x = 97,098,645.21
  5. Step 5: Solve for x
    x = 97,098,645.21/13,989.66
  6. Step 6: Final answer
    x = 6,940.74

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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.