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Finding the Fourth Proportional to 10,955.49, 16,438.42 and 5,687.70

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Solution

The fourth proportional to 10,955.49, 16,438.42 and 5,687.70 is: 8,534.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.49 : 16,438.42 = 5,687.70 : x
  2. Step 2: Convert to fraction form
    10,955.49/16,438.42 = 5,687.70/x
  3. Step 3: Cross multiply
    10,955.49x = 16,438.42 × 5,687.70
  4. Step 4: Simplify right side
    10,955.49x = 93,496,801.43
  5. Step 5: Solve for x
    x = 93,496,801.43/10,955.49
  6. Step 6: Final answer
    x = 8,534.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.