Home / 31,629.96-47,346.12-21,108.60

Finding the Fourth Proportional to 31,629.96, 47,346.12 and 21,108.60

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Solution

The fourth proportional to 31,629.96, 47,346.12 and 21,108.60 is: 31,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.96 : 47,346.12 = 21,108.60 : x
  2. Step 2: Convert to fraction form
    31,629.96/47,346.12 = 21,108.60/x
  3. Step 3: Cross multiply
    31,629.96x = 47,346.12 × 21,108.60
  4. Step 4: Simplify right side
    31,629.96x = 999,410,308.63
  5. Step 5: Solve for x
    x = 999,410,308.63/31,629.96
  6. Step 6: Final answer
    x = 31,596.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.