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Finding the Fourth Proportional to 17,903.70, 24,706.80 and 9,945.72

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Solution

The fourth proportional to 17,903.70, 24,706.80 and 9,945.72 is: 13,724.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,903.70 : 24,706.80 = 9,945.72 : x
  2. Step 2: Convert to fraction form
    17,903.70/24,706.80 = 9,945.72/x
  3. Step 3: Cross multiply
    17,903.70x = 24,706.80 × 9,945.72
  4. Step 4: Simplify right side
    17,903.70x = 245,726,914.90
  5. Step 5: Solve for x
    x = 245,726,914.90/17,903.70
  6. Step 6: Final answer
    x = 13,724.92

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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.