Home / 12,984.72-19,475.16-4,218.48

Finding the Fourth Proportional to 12,984.72, 19,475.16 and 4,218.48

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Solution

The fourth proportional to 12,984.72, 19,475.16 and 4,218.48 is: 6,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.72 : 19,475.16 = 4,218.48 : x
  2. Step 2: Convert to fraction form
    12,984.72/19,475.16 = 4,218.48/x
  3. Step 3: Cross multiply
    12,984.72x = 19,475.16 × 4,218.48
  4. Step 4: Simplify right side
    12,984.72x = 82,155,572.96
  5. Step 5: Solve for x
    x = 82,155,572.96/12,984.72
  6. Step 6: Final answer
    x = 6,327.10

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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.