Home / 20,998.24-28,986.48-15,019.52

Finding the Fourth Proportional to 20,998.24, 28,986.48 and 15,019.52

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Solution

The fourth proportional to 20,998.24, 28,986.48 and 15,019.52 is: 20,733.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.24 : 28,986.48 = 15,019.52 : x
  2. Step 2: Convert to fraction form
    20,998.24/28,986.48 = 15,019.52/x
  3. Step 3: Cross multiply
    20,998.24x = 28,986.48 × 15,019.52
  4. Step 4: Simplify right side
    20,998.24x = 435,363,016.09
  5. Step 5: Solve for x
    x = 435,363,016.09/20,998.24
  6. Step 6: Final answer
    x = 20,733.31

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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.