Home / 13,618.77-18,795.26-9,151.82

Finding the Fourth Proportional to 13,618.77, 18,795.26 and 9,151.82

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Solution

The fourth proportional to 13,618.77, 18,795.26 and 9,151.82 is: 12,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.77 : 18,795.26 = 9,151.82 : x
  2. Step 2: Convert to fraction form
    13,618.77/18,795.26 = 9,151.82/x
  3. Step 3: Cross multiply
    13,618.77x = 18,795.26 × 9,151.82
  4. Step 4: Simplify right side
    13,618.77x = 172,010,906.24
  5. Step 5: Solve for x
    x = 172,010,906.24/13,618.77
  6. Step 6: Final answer
    x = 12,630.43

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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.