Home / 20,802.47-31,202.78-5,809.68

Finding the Fourth Proportional to 20,802.47, 31,202.78 and 5,809.68

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Solution

The fourth proportional to 20,802.47, 31,202.78 and 5,809.68 is: 8,714.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.47 : 31,202.78 = 5,809.68 : x
  2. Step 2: Convert to fraction form
    20,802.47/31,202.78 = 5,809.68/x
  3. Step 3: Cross multiply
    20,802.47x = 31,202.78 × 5,809.68
  4. Step 4: Simplify right side
    20,802.47x = 181,278,137.86
  5. Step 5: Solve for x
    x = 181,278,137.86/20,802.47
  6. Step 6: Final answer
    x = 8,714.26

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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.