Home / 20,802.02-28,739.36-19,777.88

Finding the Fourth Proportional to 20,802.02, 28,739.36 and 19,777.88

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Solution

The fourth proportional to 20,802.02, 28,739.36 and 19,777.88 is: 27,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.02 : 28,739.36 = 19,777.88 : x
  2. Step 2: Convert to fraction form
    20,802.02/28,739.36 = 19,777.88/x
  3. Step 3: Cross multiply
    20,802.02x = 28,739.36 × 19,777.88
  4. Step 4: Simplify right side
    20,802.02x = 568,403,734.65
  5. Step 5: Solve for x
    x = 568,403,734.65/20,802.02
  6. Step 6: Final answer
    x = 27,324.45

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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.