Home / 30,721.36-42,399.56-17,295.27

Finding the Fourth Proportional to 30,721.36, 42,399.56 and 17,295.27

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Solution

The fourth proportional to 30,721.36, 42,399.56 and 17,295.27 is: 23,869.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721.36 : 42,399.56 = 17,295.27 : x
  2. Step 2: Convert to fraction form
    30,721.36/42,399.56 = 17,295.27/x
  3. Step 3: Cross multiply
    30,721.36x = 42,399.56 × 17,295.27
  4. Step 4: Simplify right side
    30,721.36x = 733,311,838.08
  5. Step 5: Solve for x
    x = 733,311,838.08/30,721.36
  6. Step 6: Final answer
    x = 23,869.77

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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.