Home / 12,851.19-19,276.79-4,086.86

Finding the Fourth Proportional to 12,851.19, 19,276.79 and 4,086.86

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Solution

The fourth proportional to 12,851.19, 19,276.79 and 4,086.86 is: 6,130.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,851.19 : 19,276.79 = 4,086.86 : x
  2. Step 2: Convert to fraction form
    12,851.19/19,276.79 = 4,086.86/x
  3. Step 3: Cross multiply
    12,851.19x = 19,276.79 × 4,086.86
  4. Step 4: Simplify right side
    12,851.19x = 78,781,425.16
  5. Step 5: Solve for x
    x = 78,781,425.16/12,851.19
  6. Step 6: Final answer
    x = 6,130.28

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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.