Home / 22,379.28-30,879.99-12,946.02

Finding the Fourth Proportional to 22,379.28, 30,879.99 and 12,946.02

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Solution

The fourth proportional to 22,379.28, 30,879.99 and 12,946.02 is: 17,863.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,379.28 : 30,879.99 = 12,946.02 : x
  2. Step 2: Convert to fraction form
    22,379.28/30,879.99 = 12,946.02/x
  3. Step 3: Cross multiply
    22,379.28x = 30,879.99 × 12,946.02
  4. Step 4: Simplify right side
    22,379.28x = 399,772,968.14
  5. Step 5: Solve for x
    x = 399,772,968.14/22,379.28
  6. Step 6: Final answer
    x = 17,863.53

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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.