Home / 18,942.51-26,129.96-11,856.63

Finding the Fourth Proportional to 18,942.51, 26,129.96 and 11,856.63

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Solution

The fourth proportional to 18,942.51, 26,129.96 and 11,856.63 is: 16,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.51 : 26,129.96 = 11,856.63 : x
  2. Step 2: Convert to fraction form
    18,942.51/26,129.96 = 11,856.63/x
  3. Step 3: Cross multiply
    18,942.51x = 26,129.96 × 11,856.63
  4. Step 4: Simplify right side
    18,942.51x = 309,813,267.63
  5. Step 5: Solve for x
    x = 309,813,267.63/18,942.51
  6. Step 6: Final answer
    x = 16,355.45

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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.