Home / 30,664.98-42,318.12-17,921.52

Finding the Fourth Proportional to 30,664.98, 42,318.12 and 17,921.52

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Solution

The fourth proportional to 30,664.98, 42,318.12 and 17,921.52 is: 24,731.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,664.98 : 42,318.12 = 17,921.52 : x
  2. Step 2: Convert to fraction form
    30,664.98/42,318.12 = 17,921.52/x
  3. Step 3: Cross multiply
    30,664.98x = 42,318.12 × 17,921.52
  4. Step 4: Simplify right side
    30,664.98x = 758,405,033.94
  5. Step 5: Solve for x
    x = 758,405,033.94/30,664.98
  6. Step 6: Final answer
    x = 24,731.96

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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.