Home / 20,273.12-27,990.06-18,144.96

Finding the Fourth Proportional to 20,273.12, 27,990.06 and 18,144.96

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Solution

The fourth proportional to 20,273.12, 27,990.06 and 18,144.96 is: 25,051.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.12 : 27,990.06 = 18,144.96 : x
  2. Step 2: Convert to fraction form
    20,273.12/27,990.06 = 18,144.96/x
  3. Step 3: Cross multiply
    20,273.12x = 27,990.06 × 18,144.96
  4. Step 4: Simplify right side
    20,273.12x = 507,878,424.51
  5. Step 5: Solve for x
    x = 507,878,424.51/20,273.12
  6. Step 6: Final answer
    x = 25,051.82

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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.