Home / 30,800.42-42,504.09-17,371.70

Finding the Fourth Proportional to 30,800.42, 42,504.09 and 17,371.70

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Solution

The fourth proportional to 30,800.42, 42,504.09 and 17,371.70 is: 23,972.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.42 : 42,504.09 = 17,371.70 : x
  2. Step 2: Convert to fraction form
    30,800.42/42,504.09 = 17,371.70/x
  3. Step 3: Cross multiply
    30,800.42x = 42,504.09 × 17,371.70
  4. Step 4: Simplify right side
    30,800.42x = 738,368,300.25
  5. Step 5: Solve for x
    x = 738,368,300.25/30,800.42
  6. Step 6: Final answer
    x = 23,972.67

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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.