Home / 23,109.06-31,889.97-13,677.78

Finding the Fourth Proportional to 23,109.06, 31,889.97 and 13,677.78

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Solution

The fourth proportional to 23,109.06, 31,889.97 and 13,677.78 is: 18,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,109.06 : 31,889.97 = 13,677.78 : x
  2. Step 2: Convert to fraction form
    23,109.06/31,889.97 = 13,677.78/x
  3. Step 3: Cross multiply
    23,109.06x = 31,889.97 × 13,677.78
  4. Step 4: Simplify right side
    23,109.06x = 436,183,993.87
  5. Step 5: Solve for x
    x = 436,183,993.87/23,109.06
  6. Step 6: Final answer
    x = 18,875.02

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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.