Home / 20,582.88-28,420.37-15,795.24

Finding the Fourth Proportional to 20,582.88, 28,420.37 and 15,795.24

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Solution

The fourth proportional to 20,582.88, 28,420.37 and 15,795.24 is: 21,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.88 : 28,420.37 = 15,795.24 : x
  2. Step 2: Convert to fraction form
    20,582.88/28,420.37 = 15,795.24/x
  3. Step 3: Cross multiply
    20,582.88x = 28,420.37 × 15,795.24
  4. Step 4: Simplify right side
    20,582.88x = 448,906,565.04
  5. Step 5: Solve for x
    x = 448,906,565.04/20,582.88
  6. Step 6: Final answer
    x = 21,809.71

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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.