Home / 30,025,760.40-41,431,840.20-21,320,756.82

Finding the Fourth Proportional to 30,025,760.40, 41,431,840.20 and 21,320,756.82

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Solution

The fourth proportional to 30,025,760.40, 41,431,840.20 and 21,320,756.82 is: 29,420,010.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,025,760.40 : 41,431,840.20 = 21,320,756.82 : x
  2. Step 2: Convert to fraction form
    30,025,760.40/41,431,840.20 = 21,320,756.82/x
  3. Step 3: Cross multiply
    30,025,760.40x = 41,431,840.20 × 21,320,756.82
  4. Step 4: Simplify right side
    30,025,760.40x = 883,358,189,509,300.25
  5. Step 5: Solve for x
    x = 883,358,189,509,300.25/30,025,760.40
  6. Step 6: Final answer
    x = 29,420,010.61

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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.