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Finding the Fourth Proportional to 14,491.00, 20,019.86 and 12,388.44

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Solution

The fourth proportional to 14,491.00, 20,019.86 and 12,388.44 is: 17,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,491.00 : 20,019.86 = 12,388.44 : x
  2. Step 2: Convert to fraction form
    14,491.00/20,019.86 = 12,388.44/x
  3. Step 3: Cross multiply
    14,491.00x = 20,019.86 × 12,388.44
  4. Step 4: Simplify right side
    14,491.00x = 248,014,894.01
  5. Step 5: Solve for x
    x = 248,014,894.01/14,491.00
  6. Step 6: Final answer
    x = 17,115.10

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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.