Home / 30,750.35-42,429.85-17,318.73

Finding the Fourth Proportional to 30,750.35, 42,429.85 and 17,318.73

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Solution

The fourth proportional to 30,750.35, 42,429.85 and 17,318.73 is: 23,896.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,750.35 : 42,429.85 = 17,318.73 : x
  2. Step 2: Convert to fraction form
    30,750.35/42,429.85 = 17,318.73/x
  3. Step 3: Cross multiply
    30,750.35x = 42,429.85 × 17,318.73
  4. Step 4: Simplify right side
    30,750.35x = 734,831,029.50
  5. Step 5: Solve for x
    x = 734,831,029.50/30,750.35
  6. Step 6: Final answer
    x = 23,896.67

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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.