Home / 20,964.08-28,930.24-12,013.20

Finding the Fourth Proportional to 20,964.08, 28,930.24 and 12,013.20

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Solution

The fourth proportional to 20,964.08, 28,930.24 and 12,013.20 is: 16,578.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.08 : 28,930.24 = 12,013.20 : x
  2. Step 2: Convert to fraction form
    20,964.08/28,930.24 = 12,013.20/x
  3. Step 3: Cross multiply
    20,964.08x = 28,930.24 × 12,013.20
  4. Step 4: Simplify right side
    20,964.08x = 347,544,759.17
  5. Step 5: Solve for x
    x = 347,544,759.17/20,964.08
  6. Step 6: Final answer
    x = 16,578.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.