Home / 30,691.23-42,339.58-19,935.37

Finding the Fourth Proportional to 30,691.23, 42,339.58 and 19,935.37

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Solution

The fourth proportional to 30,691.23, 42,339.58 and 19,935.37 is: 27,501.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,691.23 : 42,339.58 = 19,935.37 : x
  2. Step 2: Convert to fraction form
    30,691.23/42,339.58 = 19,935.37/x
  3. Step 3: Cross multiply
    30,691.23x = 42,339.58 × 19,935.37
  4. Step 4: Simplify right side
    30,691.23x = 844,055,192.94
  5. Step 5: Solve for x
    x = 844,055,192.94/30,691.23
  6. Step 6: Final answer
    x = 27,501.51

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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.