Home / 30,422.13-41,979.80-16,991.52

Finding the Fourth Proportional to 30,422.13, 41,979.80 and 16,991.52

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Solution

The fourth proportional to 30,422.13, 41,979.80 and 16,991.52 is: 23,446.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,422.13 : 41,979.80 = 16,991.52 : x
  2. Step 2: Convert to fraction form
    30,422.13/41,979.80 = 16,991.52/x
  3. Step 3: Cross multiply
    30,422.13x = 41,979.80 × 16,991.52
  4. Step 4: Simplify right side
    30,422.13x = 713,300,611.30
  5. Step 5: Solve for x
    x = 713,300,611.30/30,422.13
  6. Step 6: Final answer
    x = 23,446.77

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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.