Home / 13,979.64-20,970.27-4,119.24

Finding the Fourth Proportional to 13,979.64, 20,970.27 and 4,119.24

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Solution

The fourth proportional to 13,979.64, 20,970.27 and 4,119.24 is: 6,179.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.64 : 20,970.27 = 4,119.24 : x
  2. Step 2: Convert to fraction form
    13,979.64/20,970.27 = 4,119.24/x
  3. Step 3: Cross multiply
    13,979.64x = 20,970.27 × 4,119.24
  4. Step 4: Simplify right side
    13,979.64x = 86,381,574.99
  5. Step 5: Solve for x
    x = 86,381,574.99/13,979.64
  6. Step 6: Final answer
    x = 6,179.10

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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.