Home / 30,937.72-42,693.78-16,790.44

Finding the Fourth Proportional to 30,937.72, 42,693.78 and 16,790.44

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Solution

The fourth proportional to 30,937.72, 42,693.78 and 16,790.44 is: 23,170.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,937.72 : 42,693.78 = 16,790.44 : x
  2. Step 2: Convert to fraction form
    30,937.72/42,693.78 = 16,790.44/x
  3. Step 3: Cross multiply
    30,937.72x = 42,693.78 × 16,790.44
  4. Step 4: Simplify right side
    30,937.72x = 716,847,351.46
  5. Step 5: Solve for x
    x = 716,847,351.46/30,937.72
  6. Step 6: Final answer
    x = 23,170.66

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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.