Home / 28,960.74-39,979.44-21,793.32

Finding the Fourth Proportional to 28,960.74, 39,979.44 and 21,793.32

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Solution

The fourth proportional to 28,960.74, 39,979.44 and 21,793.32 is: 30,085.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,960.74 : 39,979.44 = 21,793.32 : x
  2. Step 2: Convert to fraction form
    28,960.74/39,979.44 = 21,793.32/x
  3. Step 3: Cross multiply
    28,960.74x = 39,979.44 × 21,793.32
  4. Step 4: Simplify right side
    28,960.74x = 871,284,729.34
  5. Step 5: Solve for x
    x = 871,284,729.34/28,960.74
  6. Step 6: Final answer
    x = 30,085.03

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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.