Home / 19,131.15-28,680.29-6,649.55

Finding the Fourth Proportional to 19,131.15, 28,680.29 and 6,649.55

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Solution

The fourth proportional to 19,131.15, 28,680.29 and 6,649.55 is: 9,968.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.15 : 28,680.29 = 6,649.55 : x
  2. Step 2: Convert to fraction form
    19,131.15/28,680.29 = 6,649.55/x
  3. Step 3: Cross multiply
    19,131.15x = 28,680.29 × 6,649.55
  4. Step 4: Simplify right side
    19,131.15x = 190,711,022.37
  5. Step 5: Solve for x
    x = 190,711,022.37/19,131.15
  6. Step 6: Final answer
    x = 9,968.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.