Home / 18,139.54-25,026.14-11,855.56

Finding the Fourth Proportional to 18,139.54, 25,026.14 and 11,855.56

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Solution

The fourth proportional to 18,139.54, 25,026.14 and 11,855.56 is: 16,356.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.54 : 25,026.14 = 11,855.56 : x
  2. Step 2: Convert to fraction form
    18,139.54/25,026.14 = 11,855.56/x
  3. Step 3: Cross multiply
    18,139.54x = 25,026.14 × 11,855.56
  4. Step 4: Simplify right side
    18,139.54x = 296,698,904.34
  5. Step 5: Solve for x
    x = 296,698,904.34/18,139.54
  6. Step 6: Final answer
    x = 16,356.47

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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.