Home / 11,897.71-16,418.99-6,520.30

Finding the Fourth Proportional to 11,897.71, 16,418.99 and 6,520.30

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Solution

The fourth proportional to 11,897.71, 16,418.99 and 6,520.30 is: 8,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.71 : 16,418.99 = 6,520.30 : x
  2. Step 2: Convert to fraction form
    11,897.71/16,418.99 = 6,520.30/x
  3. Step 3: Cross multiply
    11,897.71x = 16,418.99 × 6,520.30
  4. Step 4: Simplify right side
    11,897.71x = 107,056,740.50
  5. Step 5: Solve for x
    x = 107,056,740.50/11,897.71
  6. Step 6: Final answer
    x = 8,998.10

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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.