Home / 13,580.75-20,371.89-4,222.10

Finding the Fourth Proportional to 13,580.75, 20,371.89 and 4,222.10

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Solution

The fourth proportional to 13,580.75, 20,371.89 and 4,222.10 is: 6,333.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.75 : 20,371.89 = 4,222.10 : x
  2. Step 2: Convert to fraction form
    13,580.75/20,371.89 = 4,222.10/x
  3. Step 3: Cross multiply
    13,580.75x = 20,371.89 × 4,222.10
  4. Step 4: Simplify right side
    13,580.75x = 86,012,156.77
  5. Step 5: Solve for x
    x = 86,012,156.77/13,580.75
  6. Step 6: Final answer
    x = 6,333.39

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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.