Home / 30,731.87-42,410.78-17,303.61

Finding the Fourth Proportional to 30,731.87, 42,410.78 and 17,303.61

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Solution

The fourth proportional to 30,731.87, 42,410.78 and 17,303.61 is: 23,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,731.87 : 42,410.78 = 17,303.61 : x
  2. Step 2: Convert to fraction form
    30,731.87/42,410.78 = 17,303.61/x
  3. Step 3: Cross multiply
    30,731.87x = 42,410.78 × 17,303.61
  4. Step 4: Simplify right side
    30,731.87x = 733,859,596.92
  5. Step 5: Solve for x
    x = 733,859,596.92/30,731.87
  6. Step 6: Final answer
    x = 23,879.43

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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.