Home / 30,921.29-42,668.79-17,489.45

Finding the Fourth Proportional to 30,921.29, 42,668.79 and 17,489.45

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Solution

The fourth proportional to 30,921.29, 42,668.79 and 17,489.45 is: 24,133.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.29 : 42,668.79 = 17,489.45 : x
  2. Step 2: Convert to fraction form
    30,921.29/42,668.79 = 17,489.45/x
  3. Step 3: Cross multiply
    30,921.29x = 42,668.79 × 17,489.45
  4. Step 4: Simplify right side
    30,921.29x = 746,253,669.27
  5. Step 5: Solve for x
    x = 746,253,669.27/30,921.29
  6. Step 6: Final answer
    x = 24,133.98

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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.