Home / 30,937.85-42,694.28-16,790.70

Finding the Fourth Proportional to 30,937.85, 42,694.28 and 16,790.70

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Solution

The fourth proportional to 30,937.85, 42,694.28 and 16,790.70 is: 23,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,937.85 : 42,694.28 = 16,790.70 : x
  2. Step 2: Convert to fraction form
    30,937.85/42,694.28 = 16,790.70/x
  3. Step 3: Cross multiply
    30,937.85x = 42,694.28 × 16,790.70
  4. Step 4: Simplify right side
    30,937.85x = 716,866,847.20
  5. Step 5: Solve for x
    x = 716,866,847.20/30,937.85
  6. Step 6: Final answer
    x = 23,171.19

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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.