Home / 12,495.28-18,826.28-11,310.80

Finding the Fourth Proportional to 12,495.28, 18,826.28 and 11,310.80

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Solution

The fourth proportional to 12,495.28, 18,826.28 and 11,310.80 is: 17,041.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.28 : 18,826.28 = 11,310.80 : x
  2. Step 2: Convert to fraction form
    12,495.28/18,826.28 = 11,310.80/x
  3. Step 3: Cross multiply
    12,495.28x = 18,826.28 × 11,310.80
  4. Step 4: Simplify right side
    12,495.28x = 212,940,287.82
  5. Step 5: Solve for x
    x = 212,940,287.82/12,495.28
  6. Step 6: Final answer
    x = 17,041.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.