Home / 13,579.95-20,370.06-3,720.09

Finding the Fourth Proportional to 13,579.95, 20,370.06 and 3,720.09

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Solution

The fourth proportional to 13,579.95, 20,370.06 and 3,720.09 is: 5,580.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.95 : 20,370.06 = 3,720.09 : x
  2. Step 2: Convert to fraction form
    13,579.95/20,370.06 = 3,720.09/x
  3. Step 3: Cross multiply
    13,579.95x = 20,370.06 × 3,720.09
  4. Step 4: Simplify right side
    13,579.95x = 75,778,456.51
  5. Step 5: Solve for x
    x = 75,778,456.51/13,579.95
  6. Step 6: Final answer
    x = 5,580.17

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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.