Home / 30,938.20-42,694.50-16,790.68

Finding the Fourth Proportional to 30,938.20, 42,694.50 and 16,790.68

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Solution

The fourth proportional to 30,938.20, 42,694.50 and 16,790.68 is: 23,171.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.20 : 42,694.50 = 16,790.68 : x
  2. Step 2: Convert to fraction form
    30,938.20/42,694.50 = 16,790.68/x
  3. Step 3: Cross multiply
    30,938.20x = 42,694.50 × 16,790.68
  4. Step 4: Simplify right side
    30,938.20x = 716,869,687.26
  5. Step 5: Solve for x
    x = 716,869,687.26/30,938.20
  6. Step 6: Final answer
    x = 23,171.02

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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.