Home / 30,811.56-42,520.30-16,664.68

Finding the Fourth Proportional to 30,811.56, 42,520.30 and 16,664.68

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Solution

The fourth proportional to 30,811.56, 42,520.30 and 16,664.68 is: 22,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.56 : 42,520.30 = 16,664.68 : x
  2. Step 2: Convert to fraction form
    30,811.56/42,520.30 = 16,664.68/x
  3. Step 3: Cross multiply
    30,811.56x = 42,520.30 × 16,664.68
  4. Step 4: Simplify right side
    30,811.56x = 708,587,193.00
  5. Step 5: Solve for x
    x = 708,587,193.00/30,811.56
  6. Step 6: Final answer
    x = 22,997.45

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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.