Home / 18,905.60-26,086.20-10,947.20

Finding the Fourth Proportional to 18,905.60, 26,086.20 and 10,947.20

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Solution

The fourth proportional to 18,905.60, 26,086.20 and 10,947.20 is: 15,105.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.60 : 26,086.20 = 10,947.20 : x
  2. Step 2: Convert to fraction form
    18,905.60/26,086.20 = 10,947.20/x
  3. Step 3: Cross multiply
    18,905.60x = 26,086.20 × 10,947.20
  4. Step 4: Simplify right side
    18,905.60x = 285,570,848.64
  5. Step 5: Solve for x
    x = 285,570,848.64/18,905.60
  6. Step 6: Final answer
    x = 15,105.09

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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.