Home / 30,579.12-42,204.24-18,007.92

Finding the Fourth Proportional to 30,579.12, 42,204.24 and 18,007.92

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Solution

The fourth proportional to 30,579.12, 42,204.24 and 18,007.92 is: 24,853.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.12 : 42,204.24 = 18,007.92 : x
  2. Step 2: Convert to fraction form
    30,579.12/42,204.24 = 18,007.92/x
  3. Step 3: Cross multiply
    30,579.12x = 42,204.24 × 18,007.92
  4. Step 4: Simplify right side
    30,579.12x = 760,010,577.58
  5. Step 5: Solve for x
    x = 760,010,577.58/30,579.12
  6. Step 6: Final answer
    x = 24,853.91

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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.