Home / 30,989.91-42,764.34-16,842.66

Finding the Fourth Proportional to 30,989.91, 42,764.34 and 16,842.66

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Solution

The fourth proportional to 30,989.91, 42,764.34 and 16,842.66 is: 23,241.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.91 : 42,764.34 = 16,842.66 : x
  2. Step 2: Convert to fraction form
    30,989.91/42,764.34 = 16,842.66/x
  3. Step 3: Cross multiply
    30,989.91x = 42,764.34 × 16,842.66
  4. Step 4: Simplify right side
    30,989.91x = 720,265,238.74
  5. Step 5: Solve for x
    x = 720,265,238.74/30,989.91
  6. Step 6: Final answer
    x = 23,241.93

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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.