Home / 12,685.60-19,028.40-3,325.60

Finding the Fourth Proportional to 12,685.60, 19,028.40 and 3,325.60

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Solution

The fourth proportional to 12,685.60, 19,028.40 and 3,325.60 is: 4,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.60 : 19,028.40 = 3,325.60 : x
  2. Step 2: Convert to fraction form
    12,685.60/19,028.40 = 3,325.60/x
  3. Step 3: Cross multiply
    12,685.60x = 19,028.40 × 3,325.60
  4. Step 4: Simplify right side
    12,685.60x = 63,280,847.04
  5. Step 5: Solve for x
    x = 63,280,847.04/12,685.60
  6. Step 6: Final answer
    x = 4,988.40

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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.