Home / 31,360.26-43,240.69-21,295.20

Finding the Fourth Proportional to 31,360.26, 43,240.69 and 21,295.20

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Solution

The fourth proportional to 31,360.26, 43,240.69 and 21,295.20 is: 29,362.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,360.26 : 43,240.69 = 21,295.20 : x
  2. Step 2: Convert to fraction form
    31,360.26/43,240.69 = 21,295.20/x
  3. Step 3: Cross multiply
    31,360.26x = 43,240.69 × 21,295.20
  4. Step 4: Simplify right side
    31,360.26x = 920,819,210.67
  5. Step 5: Solve for x
    x = 920,819,210.67/31,360.26
  6. Step 6: Final answer
    x = 29,362.61

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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.