Home / 12,683.28-19,018.08-3,915.84

Finding the Fourth Proportional to 12,683.28, 19,018.08 and 3,915.84

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Solution

The fourth proportional to 12,683.28, 19,018.08 and 3,915.84 is: 5,871.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,683.28 : 19,018.08 = 3,915.84 : x
  2. Step 2: Convert to fraction form
    12,683.28/19,018.08 = 3,915.84/x
  3. Step 3: Cross multiply
    12,683.28x = 19,018.08 × 3,915.84
  4. Step 4: Simplify right side
    12,683.28x = 74,471,758.39
  5. Step 5: Solve for x
    x = 74,471,758.39/12,683.28
  6. Step 6: Final answer
    x = 5,871.65

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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.