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Finding the Fourth Proportional to 17,908.70, 26,863.05 and 4,762.40

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Solution

The fourth proportional to 17,908.70, 26,863.05 and 4,762.40 is: 7,143.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,908.70 : 26,863.05 = 4,762.40 : x
  2. Step 2: Convert to fraction form
    17,908.70/26,863.05 = 4,762.40/x
  3. Step 3: Cross multiply
    17,908.70x = 26,863.05 × 4,762.40
  4. Step 4: Simplify right side
    17,908.70x = 127,932,589.32
  5. Step 5: Solve for x
    x = 127,932,589.32/17,908.70
  6. Step 6: Final answer
    x = 7,143.60

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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.