Home / 30,718.08-42,391.26-17,289.36

Finding the Fourth Proportional to 30,718.08, 42,391.26 and 17,289.36

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Solution

The fourth proportional to 30,718.08, 42,391.26 and 17,289.36 is: 23,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.08 : 42,391.26 = 17,289.36 : x
  2. Step 2: Convert to fraction form
    30,718.08/42,391.26 = 17,289.36/x
  3. Step 3: Cross multiply
    30,718.08x = 42,391.26 × 17,289.36
  4. Step 4: Simplify right side
    30,718.08x = 732,917,754.99
  5. Step 5: Solve for x
    x = 732,917,754.99/30,718.08
  6. Step 6: Final answer
    x = 23,859.49

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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.