Home / 15,095.44-20,830.78-8,380.66

Finding the Fourth Proportional to 15,095.44, 20,830.78 and 8,380.66

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Solution

The fourth proportional to 15,095.44, 20,830.78 and 8,380.66 is: 11,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.44 : 20,830.78 = 8,380.66 : x
  2. Step 2: Convert to fraction form
    15,095.44/20,830.78 = 8,380.66/x
  3. Step 3: Cross multiply
    15,095.44x = 20,830.78 × 8,380.66
  4. Step 4: Simplify right side
    15,095.44x = 174,575,684.71
  5. Step 5: Solve for x
    x = 174,575,684.71/15,095.44
  6. Step 6: Final answer
    x = 11,564.80

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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.