Home / 13,401.01-18,578.09-12,690.03

Finding the Fourth Proportional to 13,401.01, 18,578.09 and 12,690.03

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Solution

The fourth proportional to 13,401.01, 18,578.09 and 12,690.03 is: 17,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.01 : 18,578.09 = 12,690.03 : x
  2. Step 2: Convert to fraction form
    13,401.01/18,578.09 = 12,690.03/x
  3. Step 3: Cross multiply
    13,401.01x = 18,578.09 × 12,690.03
  4. Step 4: Simplify right side
    13,401.01x = 235,756,620.84
  5. Step 5: Solve for x
    x = 235,756,620.84/13,401.01
  6. Step 6: Final answer
    x = 17,592.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.