Home / 22,176.78-30,603.19-13,219.67

Finding the Fourth Proportional to 22,176.78, 30,603.19 and 13,219.67

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Solution

The fourth proportional to 22,176.78, 30,603.19 and 13,219.67 is: 18,242.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,176.78 : 30,603.19 = 13,219.67 : x
  2. Step 2: Convert to fraction form
    22,176.78/30,603.19 = 13,219.67/x
  3. Step 3: Cross multiply
    22,176.78x = 30,603.19 × 13,219.67
  4. Step 4: Simplify right side
    22,176.78x = 404,564,072.75
  5. Step 5: Solve for x
    x = 404,564,072.75/22,176.78
  6. Step 6: Final answer
    x = 18,242.69

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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.