Home / 30,811.50-42,519.72-16,664.04

Finding the Fourth Proportional to 30,811.50, 42,519.72 and 16,664.04

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Solution

The fourth proportional to 30,811.50, 42,519.72 and 16,664.04 is: 22,996.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.50 : 42,519.72 = 16,664.04 : x
  2. Step 2: Convert to fraction form
    30,811.50/42,519.72 = 16,664.04/x
  3. Step 3: Cross multiply
    30,811.50x = 42,519.72 × 16,664.04
  4. Step 4: Simplify right side
    30,811.50x = 708,550,314.87
  5. Step 5: Solve for x
    x = 708,550,314.87/30,811.50
  6. Step 6: Final answer
    x = 22,996.29

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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.