Home / 30,811.28-42,519.64-16,664.26

Finding the Fourth Proportional to 30,811.28, 42,519.64 and 16,664.26

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Solution

The fourth proportional to 30,811.28, 42,519.64 and 16,664.26 is: 22,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.28 : 42,519.64 = 16,664.26 : x
  2. Step 2: Convert to fraction form
    30,811.28/42,519.64 = 16,664.26/x
  3. Step 3: Cross multiply
    30,811.28x = 42,519.64 × 16,664.26
  4. Step 4: Simplify right side
    30,811.28x = 708,558,336.07
  5. Step 5: Solve for x
    x = 708,558,336.07/30,811.28
  6. Step 6: Final answer
    x = 22,996.72

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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.