Home / 13,399.16-20,111.16-6,830.28

Finding the Fourth Proportional to 13,399.16, 20,111.16 and 6,830.28

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Solution

The fourth proportional to 13,399.16, 20,111.16 and 6,830.28 is: 10,251.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.16 : 20,111.16 = 6,830.28 : x
  2. Step 2: Convert to fraction form
    13,399.16/20,111.16 = 6,830.28/x
  3. Step 3: Cross multiply
    13,399.16x = 20,111.16 × 6,830.28
  4. Step 4: Simplify right side
    13,399.16x = 137,364,853.92
  5. Step 5: Solve for x
    x = 137,364,853.92/13,399.16
  6. Step 6: Final answer
    x = 10,251.75

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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.