Home / 30,938.13-42,694.64-16,790.97

Finding the Fourth Proportional to 30,938.13, 42,694.64 and 16,790.97

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Solution

The fourth proportional to 30,938.13, 42,694.64 and 16,790.97 is: 23,171.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.13 : 42,694.64 = 16,790.97 : x
  2. Step 2: Convert to fraction form
    30,938.13/42,694.64 = 16,790.97/x
  3. Step 3: Cross multiply
    30,938.13x = 42,694.64 × 16,790.97
  4. Step 4: Simplify right side
    30,938.13x = 716,884,461.38
  5. Step 5: Solve for x
    x = 716,884,461.38/30,938.13
  6. Step 6: Final answer
    x = 23,171.55

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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.