Home / 15,664.96-21,618.12-8,591.86

Finding the Fourth Proportional to 15,664.96, 21,618.12 and 8,591.86

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Solution

The fourth proportional to 15,664.96, 21,618.12 and 8,591.86 is: 11,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.96 : 21,618.12 = 8,591.86 : x
  2. Step 2: Convert to fraction form
    15,664.96/21,618.12 = 8,591.86/x
  3. Step 3: Cross multiply
    15,664.96x = 21,618.12 × 8,591.86
  4. Step 4: Simplify right side
    15,664.96x = 185,739,860.50
  5. Step 5: Solve for x
    x = 185,739,860.50/15,664.96
  6. Step 6: Final answer
    x = 11,857.03

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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.