Home / 20,582.36-28,403.58-11,150.90

Finding the Fourth Proportional to 20,582.36, 28,403.58 and 11,150.90

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Solution

The fourth proportional to 20,582.36, 28,403.58 and 11,150.90 is: 15,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.36 : 28,403.58 = 11,150.90 : x
  2. Step 2: Convert to fraction form
    20,582.36/28,403.58 = 11,150.90/x
  3. Step 3: Cross multiply
    20,582.36x = 28,403.58 × 11,150.90
  4. Step 4: Simplify right side
    20,582.36x = 316,725,480.22
  5. Step 5: Solve for x
    x = 316,725,480.22/20,582.36
  6. Step 6: Final answer
    x = 15,388.20

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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.