Home / 30,274.56-41,765.76-21,320.64

Finding the Fourth Proportional to 30,274.56, 41,765.76 and 21,320.64

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Solution

The fourth proportional to 30,274.56, 41,765.76 and 21,320.64 is: 29,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,274.56 : 41,765.76 = 21,320.64 : x
  2. Step 2: Convert to fraction form
    30,274.56/41,765.76 = 21,320.64/x
  3. Step 3: Cross multiply
    30,274.56x = 41,765.76 × 21,320.64
  4. Step 4: Simplify right side
    30,274.56x = 890,472,733.29
  5. Step 5: Solve for x
    x = 890,472,733.29/30,274.56
  6. Step 6: Final answer
    x = 29,413.23

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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.