Home / 12,631.09-18,946.62-7,012.20

Finding the Fourth Proportional to 12,631.09, 18,946.62 and 7,012.20

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Solution

The fourth proportional to 12,631.09, 18,946.62 and 7,012.20 is: 10,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.09 : 18,946.62 = 7,012.20 : x
  2. Step 2: Convert to fraction form
    12,631.09/18,946.62 = 7,012.20/x
  3. Step 3: Cross multiply
    12,631.09x = 18,946.62 × 7,012.20
  4. Step 4: Simplify right side
    12,631.09x = 132,857,488.76
  5. Step 5: Solve for x
    x = 132,857,488.76/12,631.09
  6. Step 6: Final answer
    x = 10,518.29

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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.