Home / 20,804.47-31,205.77-5,811.68

Finding the Fourth Proportional to 20,804.47, 31,205.77 and 5,811.68

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Solution

The fourth proportional to 20,804.47, 31,205.77 and 5,811.68 is: 8,717.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.47 : 31,205.77 = 5,811.68 : x
  2. Step 2: Convert to fraction form
    20,804.47/31,205.77 = 5,811.68/x
  3. Step 3: Cross multiply
    20,804.47x = 31,205.77 × 5,811.68
  4. Step 4: Simplify right side
    20,804.47x = 181,357,949.39
  5. Step 5: Solve for x
    x = 181,357,949.39/20,804.47
  6. Step 6: Final answer
    x = 8,717.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.