Home / 18,693.06-25,795.51-11,139.22

Finding the Fourth Proportional to 18,693.06, 25,795.51 and 11,139.22

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Solution

The fourth proportional to 18,693.06, 25,795.51 and 11,139.22 is: 15,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.06 : 25,795.51 = 11,139.22 : x
  2. Step 2: Convert to fraction form
    18,693.06/25,795.51 = 11,139.22/x
  3. Step 3: Cross multiply
    18,693.06x = 25,795.51 × 11,139.22
  4. Step 4: Simplify right side
    18,693.06x = 287,341,953.24
  5. Step 5: Solve for x
    x = 287,341,953.24/18,693.06
  6. Step 6: Final answer
    x = 15,371.58

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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.