Home / 20,068.16-30,107.36-6,921.28

Finding the Fourth Proportional to 20,068.16, 30,107.36 and 6,921.28

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Solution

The fourth proportional to 20,068.16, 30,107.36 and 6,921.28 is: 10,383.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.16 : 30,107.36 = 6,921.28 : x
  2. Step 2: Convert to fraction form
    20,068.16/30,107.36 = 6,921.28/x
  3. Step 3: Cross multiply
    20,068.16x = 30,107.36 × 6,921.28
  4. Step 4: Simplify right side
    20,068.16x = 208,381,468.62
  5. Step 5: Solve for x
    x = 208,381,468.62/20,068.16
  6. Step 6: Final answer
    x = 10,383.69

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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.