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Finding the Fourth Proportional to 12,680.28, 19,019.61 and 4,364.28

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Solution

The fourth proportional to 12,680.28, 19,019.61 and 4,364.28 is: 6,546.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.28 : 19,019.61 = 4,364.28 : x
  2. Step 2: Convert to fraction form
    12,680.28/19,019.61 = 4,364.28/x
  3. Step 3: Cross multiply
    12,680.28x = 19,019.61 × 4,364.28
  4. Step 4: Simplify right side
    12,680.28x = 83,006,903.53
  5. Step 5: Solve for x
    x = 83,006,903.53/12,680.28
  6. Step 6: Final answer
    x = 6,546.14

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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.