Home / 30,753.22-42,433.81-17,321.61

Finding the Fourth Proportional to 30,753.22, 42,433.81 and 17,321.61

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Solution

The fourth proportional to 30,753.22, 42,433.81 and 17,321.61 is: 23,900.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.22 : 42,433.81 = 17,321.61 : x
  2. Step 2: Convert to fraction form
    30,753.22/42,433.81 = 17,321.61/x
  3. Step 3: Cross multiply
    30,753.22x = 42,433.81 × 17,321.61
  4. Step 4: Simplify right side
    30,753.22x = 735,021,907.63
  5. Step 5: Solve for x
    x = 735,021,907.63/30,753.22
  6. Step 6: Final answer
    x = 23,900.65

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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.