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Finding the Fourth Proportional to 14,639.10, 20,200.14 and 8,669.40

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Solution

The fourth proportional to 14,639.10, 20,200.14 and 8,669.40 is: 11,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.10 : 20,200.14 = 8,669.40 : x
  2. Step 2: Convert to fraction form
    14,639.10/20,200.14 = 8,669.40/x
  3. Step 3: Cross multiply
    14,639.10x = 20,200.14 × 8,669.40
  4. Step 4: Simplify right side
    14,639.10x = 175,123,093.72
  5. Step 5: Solve for x
    x = 175,123,093.72/14,639.10
  6. Step 6: Final answer
    x = 11,962.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.