Home / 18,905.43-26,091-10,947.80

Finding the Fourth Proportional to 18,905.43, 26,091 and 10,947.80

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Solution

The fourth proportional to 18,905.43, 26,091 and 10,947.80 is: 15,108.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.43 : 26,091 = 10,947.80 : x
  2. Step 2: Convert to fraction form
    18,905.43/26,091 = 10,947.80/x
  3. Step 3: Cross multiply
    18,905.43x = 26,091 × 10,947.80
  4. Step 4: Simplify right side
    18,905.43x = 285,638,919.35
  5. Step 5: Solve for x
    x = 285,638,919.35/18,905.43
  6. Step 6: Final answer
    x = 15,108.83

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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.