Home / 30,976.96-42,749.04-16,830.76

Finding the Fourth Proportional to 30,976.96, 42,749.04 and 16,830.76

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Solution

The fourth proportional to 30,976.96, 42,749.04 and 16,830.76 is: 23,226.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,976.96 : 42,749.04 = 16,830.76 : x
  2. Step 2: Convert to fraction form
    30,976.96/42,749.04 = 16,830.76/x
  3. Step 3: Cross multiply
    30,976.96x = 42,749.04 × 16,830.76
  4. Step 4: Simplify right side
    30,976.96x = 719,498,832.47
  5. Step 5: Solve for x
    x = 719,498,832.47/30,976.96
  6. Step 6: Final answer
    x = 23,226.90

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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.