Home / 30,812.22-42,520.86-16,665.06

Finding the Fourth Proportional to 30,812.22, 42,520.86 and 16,665.06

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Solution

The fourth proportional to 30,812.22, 42,520.86 and 16,665.06 is: 22,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.22 : 42,520.86 = 16,665.06 : x
  2. Step 2: Convert to fraction form
    30,812.22/42,520.86 = 16,665.06/x
  3. Step 3: Cross multiply
    30,812.22x = 42,520.86 × 16,665.06
  4. Step 4: Simplify right side
    30,812.22x = 708,612,683.15
  5. Step 5: Solve for x
    x = 708,612,683.15/30,812.22
  6. Step 6: Final answer
    x = 22,997.78

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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.