Home / 13,190.03-18,210.73-11,771.28

Finding the Fourth Proportional to 13,190.03, 18,210.73 and 11,771.28

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Solution

The fourth proportional to 13,190.03, 18,210.73 and 11,771.28 is: 16,251.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.03 : 18,210.73 = 11,771.28 : x
  2. Step 2: Convert to fraction form
    13,190.03/18,210.73 = 11,771.28/x
  3. Step 3: Cross multiply
    13,190.03x = 18,210.73 × 11,771.28
  4. Step 4: Simplify right side
    13,190.03x = 214,363,572.41
  5. Step 5: Solve for x
    x = 214,363,572.41/13,190.03
  6. Step 6: Final answer
    x = 16,251.95

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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.