Home / 30,718.26-42,386.58-17,288.71

Finding the Fourth Proportional to 30,718.26, 42,386.58 and 17,288.71

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Solution

The fourth proportional to 30,718.26, 42,386.58 and 17,288.71 is: 23,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.26 : 42,386.58 = 17,288.71 : x
  2. Step 2: Convert to fraction form
    30,718.26/42,386.58 = 17,288.71/x
  3. Step 3: Cross multiply
    30,718.26x = 42,386.58 × 17,288.71
  4. Step 4: Simplify right side
    30,718.26x = 732,809,407.33
  5. Step 5: Solve for x
    x = 732,809,407.33/30,718.26
  6. Step 6: Final answer
    x = 23,855.83

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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.