Home / 30,938.02-42,694.49-16,790.86

Finding the Fourth Proportional to 30,938.02, 42,694.49 and 16,790.86

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Solution

The fourth proportional to 30,938.02, 42,694.49 and 16,790.86 is: 23,171.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.02 : 42,694.49 = 16,790.86 : x
  2. Step 2: Convert to fraction form
    30,938.02/42,694.49 = 16,790.86/x
  3. Step 3: Cross multiply
    30,938.02x = 42,694.49 × 16,790.86
  4. Step 4: Simplify right side
    30,938.02x = 716,876,906.93
  5. Step 5: Solve for x
    x = 716,876,906.93/30,938.02
  6. Step 6: Final answer
    x = 23,171.39

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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.