Home / 18,905.68-26,086.08-10,520.56

Finding the Fourth Proportional to 18,905.68, 26,086.08 and 10,520.56

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Solution

The fourth proportional to 18,905.68, 26,086.08 and 10,520.56 is: 14,516.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.68 : 26,086.08 = 10,520.56 : x
  2. Step 2: Convert to fraction form
    18,905.68/26,086.08 = 10,520.56/x
  3. Step 3: Cross multiply
    18,905.68x = 26,086.08 × 10,520.56
  4. Step 4: Simplify right side
    18,905.68x = 274,440,169.80
  5. Step 5: Solve for x
    x = 274,440,169.80/18,905.68
  6. Step 6: Final answer
    x = 14,516.28

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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.