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Finding the Fourth Proportional to 14,007.60, 20,987.10 and 12,063.60

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Solution

The fourth proportional to 14,007.60, 20,987.10 and 12,063.60 is: 18,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.60 : 20,987.10 = 12,063.60 : x
  2. Step 2: Convert to fraction form
    14,007.60/20,987.10 = 12,063.60/x
  3. Step 3: Cross multiply
    14,007.60x = 20,987.10 × 12,063.60
  4. Step 4: Simplify right side
    14,007.60x = 253,179,979.56
  5. Step 5: Solve for x
    x = 253,179,979.56/14,007.60
  6. Step 6: Final answer
    x = 18,074.47

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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.