Home / 31,622.40-43,630.38-18,197.46

Finding the Fourth Proportional to 31,622.40, 43,630.38 and 18,197.46

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Solution

The fourth proportional to 31,622.40, 43,630.38 and 18,197.46 is: 25,107.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,622.40 : 43,630.38 = 18,197.46 : x
  2. Step 2: Convert to fraction form
    31,622.40/43,630.38 = 18,197.46/x
  3. Step 3: Cross multiply
    31,622.40x = 43,630.38 × 18,197.46
  4. Step 4: Simplify right side
    31,622.40x = 793,962,094.83
  5. Step 5: Solve for x
    x = 793,962,094.83/31,622.40
  6. Step 6: Final answer
    x = 25,107.58

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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.