Home / 20,457.44-28,243.32-19,276.48

Finding the Fourth Proportional to 20,457.44, 28,243.32 and 19,276.48

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Solution

The fourth proportional to 20,457.44, 28,243.32 and 19,276.48 is: 26,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.44 : 28,243.32 = 19,276.48 : x
  2. Step 2: Convert to fraction form
    20,457.44/28,243.32 = 19,276.48/x
  3. Step 3: Cross multiply
    20,457.44x = 28,243.32 × 19,276.48
  4. Step 4: Simplify right side
    20,457.44x = 544,431,793.11
  5. Step 5: Solve for x
    x = 544,431,793.11/20,457.44
  6. Step 6: Final answer
    x = 26,612.90

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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.