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Finding the Fourth Proportional to 17,705.80, 26,558.70 and 16,947.40

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Solution

The fourth proportional to 17,705.80, 26,558.70 and 16,947.40 is: 25,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,705.80 : 26,558.70 = 16,947.40 : x
  2. Step 2: Convert to fraction form
    17,705.80/26,558.70 = 16,947.40/x
  3. Step 3: Cross multiply
    17,705.80x = 26,558.70 × 16,947.40
  4. Step 4: Simplify right side
    17,705.80x = 450,100,912.38
  5. Step 5: Solve for x
    x = 450,100,912.38/17,705.80
  6. Step 6: Final answer
    x = 25,421.10

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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.