Home / 30,372.76-45,537.27-18,661.78

Finding the Fourth Proportional to 30,372.76, 45,537.27 and 18,661.78

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Solution

The fourth proportional to 30,372.76, 45,537.27 and 18,661.78 is: 27,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.76 : 45,537.27 = 18,661.78 : x
  2. Step 2: Convert to fraction form
    30,372.76/45,537.27 = 18,661.78/x
  3. Step 3: Cross multiply
    30,372.76x = 45,537.27 × 18,661.78
  4. Step 4: Simplify right side
    30,372.76x = 849,806,514.54
  5. Step 5: Solve for x
    x = 849,806,514.54/30,372.76
  6. Step 6: Final answer
    x = 27,979.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.