Home / 30,979.85-42,752.30-16,832.75

Finding the Fourth Proportional to 30,979.85, 42,752.30 and 16,832.75

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Solution

The fourth proportional to 30,979.85, 42,752.30 and 16,832.75 is: 23,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.85 : 42,752.30 = 16,832.75 : x
  2. Step 2: Convert to fraction form
    30,979.85/42,752.30 = 16,832.75/x
  3. Step 3: Cross multiply
    30,979.85x = 42,752.30 × 16,832.75
  4. Step 4: Simplify right side
    30,979.85x = 719,638,479.90
  5. Step 5: Solve for x
    x = 719,638,479.90/30,979.85
  6. Step 6: Final answer
    x = 23,229.25

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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.