Home / 14,479.36-19,981.20-8,511.64

Finding the Fourth Proportional to 14,479.36, 19,981.20 and 8,511.64

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Solution

The fourth proportional to 14,479.36, 19,981.20 and 8,511.64 is: 11,745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,479.36 : 19,981.20 = 8,511.64 : x
  2. Step 2: Convert to fraction form
    14,479.36/19,981.20 = 8,511.64/x
  3. Step 3: Cross multiply
    14,479.36x = 19,981.20 × 8,511.64
  4. Step 4: Simplify right side
    14,479.36x = 170,072,781.17
  5. Step 5: Solve for x
    x = 170,072,781.17/14,479.36
  6. Step 6: Final answer
    x = 11,745.88

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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.