Home / 31,730.40-43,825.32-21,101.04

Finding the Fourth Proportional to 31,730.40, 43,825.32 and 21,101.04

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Solution

The fourth proportional to 31,730.40, 43,825.32 and 21,101.04 is: 29,144.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,730.40 : 43,825.32 = 21,101.04 : x
  2. Step 2: Convert to fraction form
    31,730.40/43,825.32 = 21,101.04/x
  3. Step 3: Cross multiply
    31,730.40x = 43,825.32 × 21,101.04
  4. Step 4: Simplify right side
    31,730.40x = 924,759,830.33
  5. Step 5: Solve for x
    x = 924,759,830.33/31,730.40
  6. Step 6: Final answer
    x = 29,144.29

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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.