Home / 12,636.72-18,955.08-4,316.81

Finding the Fourth Proportional to 12,636.72, 18,955.08 and 4,316.81

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Solution

The fourth proportional to 12,636.72, 18,955.08 and 4,316.81 is: 6,475.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.72 : 18,955.08 = 4,316.81 : x
  2. Step 2: Convert to fraction form
    12,636.72/18,955.08 = 4,316.81/x
  3. Step 3: Cross multiply
    12,636.72x = 18,955.08 × 4,316.81
  4. Step 4: Simplify right side
    12,636.72x = 81,825,362.54
  5. Step 5: Solve for x
    x = 81,825,362.54/12,636.72
  6. Step 6: Final answer
    x = 6,475.21

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Similar ratio
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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.