Home / 15,771.32-21,764.16-8,698.22

Finding the Fourth Proportional to 15,771.32, 21,764.16 and 8,698.22

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Solution

The fourth proportional to 15,771.32, 21,764.16 and 8,698.22 is: 12,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,771.32 : 21,764.16 = 8,698.22 : x
  2. Step 2: Convert to fraction form
    15,771.32/21,764.16 = 8,698.22/x
  3. Step 3: Cross multiply
    15,771.32x = 21,764.16 × 8,698.22
  4. Step 4: Simplify right side
    15,771.32x = 189,309,451.80
  5. Step 5: Solve for x
    x = 189,309,451.80/15,771.32
  6. Step 6: Final answer
    x = 12,003.40

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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.