Home / 12,913.25-19,369.18-4,147.47

Finding the Fourth Proportional to 12,913.25, 19,369.18 and 4,147.47

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Solution

The fourth proportional to 12,913.25, 19,369.18 and 4,147.47 is: 6,220.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.25 : 19,369.18 = 4,147.47 : x
  2. Step 2: Convert to fraction form
    12,913.25/19,369.18 = 4,147.47/x
  3. Step 3: Cross multiply
    12,913.25x = 19,369.18 × 4,147.47
  4. Step 4: Simplify right side
    12,913.25x = 80,333,170.79
  5. Step 5: Solve for x
    x = 80,333,170.79/12,913.25
  6. Step 6: Final answer
    x = 6,220.99

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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.