Home / 9,885.23-13,640.43-5,905.56

Finding the Fourth Proportional to 9,885.23, 13,640.43 and 5,905.56

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Solution

The fourth proportional to 9,885.23, 13,640.43 and 5,905.56 is: 8,148.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.23 : 13,640.43 = 5,905.56 : x
  2. Step 2: Convert to fraction form
    9,885.23/13,640.43 = 5,905.56/x
  3. Step 3: Cross multiply
    9,885.23x = 13,640.43 × 5,905.56
  4. Step 4: Simplify right side
    9,885.23x = 80,554,377.79
  5. Step 5: Solve for x
    x = 80,554,377.79/9,885.23
  6. Step 6: Final answer
    x = 8,148.96

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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.