Home / 20,582.28-28,403.58-11,150.84

Finding the Fourth Proportional to 20,582.28, 28,403.58 and 11,150.84

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Solution

The fourth proportional to 20,582.28, 28,403.58 and 11,150.84 is: 15,388.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.28 : 28,403.58 = 11,150.84 : x
  2. Step 2: Convert to fraction form
    20,582.28/28,403.58 = 11,150.84/x
  3. Step 3: Cross multiply
    20,582.28x = 28,403.58 × 11,150.84
  4. Step 4: Simplify right side
    20,582.28x = 316,723,746.22
  5. Step 5: Solve for x
    x = 316,723,746.22/20,582.28
  6. Step 6: Final answer
    x = 15,388.18

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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.