Home / 12,784.60-19,176.90-4,022.20

Finding the Fourth Proportional to 12,784.60, 19,176.90 and 4,022.20

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Solution

The fourth proportional to 12,784.60, 19,176.90 and 4,022.20 is: 6,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784.60 : 19,176.90 = 4,022.20 : x
  2. Step 2: Convert to fraction form
    12,784.60/19,176.90 = 4,022.20/x
  3. Step 3: Cross multiply
    12,784.60x = 19,176.90 × 4,022.20
  4. Step 4: Simplify right side
    12,784.60x = 77,133,327.18
  5. Step 5: Solve for x
    x = 77,133,327.18/12,784.60
  6. Step 6: Final answer
    x = 6,033.30

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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.