Home / 20,712.47-28,582.34-11,760.47

Finding the Fourth Proportional to 20,712.47, 28,582.34 and 11,760.47

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Solution

The fourth proportional to 20,712.47, 28,582.34 and 11,760.47 is: 16,228.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.47 : 28,582.34 = 11,760.47 : x
  2. Step 2: Convert to fraction form
    20,712.47/28,582.34 = 11,760.47/x
  3. Step 3: Cross multiply
    20,712.47x = 28,582.34 × 11,760.47
  4. Step 4: Simplify right side
    20,712.47x = 336,141,550.39
  5. Step 5: Solve for x
    x = 336,141,550.39/20,712.47
  6. Step 6: Final answer
    x = 16,228.95

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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.