Home / 20,775.06-28,669.53-11,343.60

Finding the Fourth Proportional to 20,775.06, 28,669.53 and 11,343.60

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Solution

The fourth proportional to 20,775.06, 28,669.53 and 11,343.60 is: 15,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.06 : 28,669.53 = 11,343.60 : x
  2. Step 2: Convert to fraction form
    20,775.06/28,669.53 = 11,343.60/x
  3. Step 3: Cross multiply
    20,775.06x = 28,669.53 × 11,343.60
  4. Step 4: Simplify right side
    20,775.06x = 325,215,680.51
  5. Step 5: Solve for x
    x = 325,215,680.51/20,775.06
  6. Step 6: Final answer
    x = 15,654.14

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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.