Home / 12,636.16-18,946.13-5,245.72

Finding the Fourth Proportional to 12,636.16, 18,946.13 and 5,245.72

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Solution

The fourth proportional to 12,636.16, 18,946.13 and 5,245.72 is: 7,865.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.16 : 18,946.13 = 5,245.72 : x
  2. Step 2: Convert to fraction form
    12,636.16/18,946.13 = 5,245.72/x
  3. Step 3: Cross multiply
    12,636.16x = 18,946.13 × 5,245.72
  4. Step 4: Simplify right side
    12,636.16x = 99,386,093.06
  5. Step 5: Solve for x
    x = 99,386,093.06/12,636.16
  6. Step 6: Final answer
    x = 7,865.21

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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.