Home / 31,224.90-43,091.93-18,485.40

Finding the Fourth Proportional to 31,224.90, 43,091.93 and 18,485.40

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Solution

The fourth proportional to 31,224.90, 43,091.93 and 18,485.40 is: 25,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,224.90 : 43,091.93 = 18,485.40 : x
  2. Step 2: Convert to fraction form
    31,224.90/43,091.93 = 18,485.40/x
  3. Step 3: Cross multiply
    31,224.90x = 43,091.93 × 18,485.40
  4. Step 4: Simplify right side
    31,224.90x = 796,571,562.82
  5. Step 5: Solve for x
    x = 796,571,562.82/31,224.90
  6. Step 6: Final answer
    x = 25,510.78

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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.