Home / 20,825.67-28,727.75-12,763.23

Finding the Fourth Proportional to 20,825.67, 28,727.75 and 12,763.23

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Solution

The fourth proportional to 20,825.67, 28,727.75 and 12,763.23 is: 17,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.67 : 28,727.75 = 12,763.23 : x
  2. Step 2: Convert to fraction form
    20,825.67/28,727.75 = 12,763.23/x
  3. Step 3: Cross multiply
    20,825.67x = 28,727.75 × 12,763.23
  4. Step 4: Simplify right side
    20,825.67x = 366,658,948.47
  5. Step 5: Solve for x
    x = 366,658,948.47/20,825.67
  6. Step 6: Final answer
    x = 17,606.10

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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.