Home / 12,984.96-19,475.55-4,218.60

Finding the Fourth Proportional to 12,984.96, 19,475.55 and 4,218.60

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Solution

The fourth proportional to 12,984.96, 19,475.55 and 4,218.60 is: 6,327.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.96 : 19,475.55 = 4,218.60 : x
  2. Step 2: Convert to fraction form
    12,984.96/19,475.55 = 4,218.60/x
  3. Step 3: Cross multiply
    12,984.96x = 19,475.55 × 4,218.60
  4. Step 4: Simplify right side
    12,984.96x = 82,159,555.23
  5. Step 5: Solve for x
    x = 82,159,555.23/12,984.96
  6. Step 6: Final answer
    x = 6,327.29

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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.