Home / 13,579.16-20,368.68-3,719.18

Finding the Fourth Proportional to 13,579.16, 20,368.68 and 3,719.18

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Solution

The fourth proportional to 13,579.16, 20,368.68 and 3,719.18 is: 5,578.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.16 : 20,368.68 = 3,719.18 : x
  2. Step 2: Convert to fraction form
    13,579.16/20,368.68 = 3,719.18/x
  3. Step 3: Cross multiply
    13,579.16x = 20,368.68 × 3,719.18
  4. Step 4: Simplify right side
    13,579.16x = 75,754,824.26
  5. Step 5: Solve for x
    x = 75,754,824.26/13,579.16
  6. Step 6: Final answer
    x = 5,578.76

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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.