Home / 28,330.96-39,112.74-21,563.44

Finding the Fourth Proportional to 28,330.96, 39,112.74 and 21,563.44

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Solution

The fourth proportional to 28,330.96, 39,112.74 and 21,563.44 is: 29,769.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.96 : 39,112.74 = 21,563.44 : x
  2. Step 2: Convert to fraction form
    28,330.96/39,112.74 = 21,563.44/x
  3. Step 3: Cross multiply
    28,330.96x = 39,112.74 × 21,563.44
  4. Step 4: Simplify right side
    28,330.96x = 843,405,222.23
  5. Step 5: Solve for x
    x = 843,405,222.23/28,330.96
  6. Step 6: Final answer
    x = 29,769.74

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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.