Home / 13,130.28-18,120.15-8,026.63

Finding the Fourth Proportional to 13,130.28, 18,120.15 and 8,026.63

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Solution

The fourth proportional to 13,130.28, 18,120.15 and 8,026.63 is: 11,076.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.28 : 18,120.15 = 8,026.63 : x
  2. Step 2: Convert to fraction form
    13,130.28/18,120.15 = 8,026.63/x
  3. Step 3: Cross multiply
    13,130.28x = 18,120.15 × 8,026.63
  4. Step 4: Simplify right side
    13,130.28x = 145,443,694.29
  5. Step 5: Solve for x
    x = 145,443,694.29/13,130.28
  6. Step 6: Final answer
    x = 11,076.97

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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.