Home / 20,486.04-30,718.76-11,940.23

Finding the Fourth Proportional to 20,486.04, 30,718.76 and 11,940.23

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Solution

The fourth proportional to 20,486.04, 30,718.76 and 11,940.23 is: 17,904.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.04 : 30,718.76 = 11,940.23 : x
  2. Step 2: Convert to fraction form
    20,486.04/30,718.76 = 11,940.23/x
  3. Step 3: Cross multiply
    20,486.04x = 30,718.76 × 11,940.23
  4. Step 4: Simplify right side
    20,486.04x = 366,789,166.36
  5. Step 5: Solve for x
    x = 366,789,166.36/20,486.04
  6. Step 6: Final answer
    x = 17,904.35

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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.