Home / 30,490.39-45,735.58-20,099.71

Finding the Fourth Proportional to 30,490.39, 45,735.58 and 20,099.71

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Solution

The fourth proportional to 30,490.39, 45,735.58 and 20,099.71 is: 30,149.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.39 : 45,735.58 = 20,099.71 : x
  2. Step 2: Convert to fraction form
    30,490.39/45,735.58 = 20,099.71/x
  3. Step 3: Cross multiply
    30,490.39x = 45,735.58 × 20,099.71
  4. Step 4: Simplify right side
    30,490.39x = 919,271,894.68
  5. Step 5: Solve for x
    x = 919,271,894.68/30,490.39
  6. Step 6: Final answer
    x = 30,149.56

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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.