Home / 20,431.34-30,636.24-7,099.18

Finding the Fourth Proportional to 20,431.34, 30,636.24 and 7,099.18

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Solution

The fourth proportional to 20,431.34, 30,636.24 and 7,099.18 is: 10,645.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.34 : 30,636.24 = 7,099.18 : x
  2. Step 2: Convert to fraction form
    20,431.34/30,636.24 = 7,099.18/x
  3. Step 3: Cross multiply
    20,431.34x = 30,636.24 × 7,099.18
  4. Step 4: Simplify right side
    20,431.34x = 217,492,182.28
  5. Step 5: Solve for x
    x = 217,492,182.28/20,431.34
  6. Step 6: Final answer
    x = 10,645.03

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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.