Home / 12,812.80-19,218.56-4,490.24

Finding the Fourth Proportional to 12,812.80, 19,218.56 and 4,490.24

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Solution

The fourth proportional to 12,812.80, 19,218.56 and 4,490.24 is: 6,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.80 : 19,218.56 = 4,490.24 : x
  2. Step 2: Convert to fraction form
    12,812.80/19,218.56 = 4,490.24/x
  3. Step 3: Cross multiply
    12,812.80x = 19,218.56 × 4,490.24
  4. Step 4: Simplify right side
    12,812.80x = 86,295,946.85
  5. Step 5: Solve for x
    x = 86,295,946.85/12,812.80
  6. Step 6: Final answer
    x = 6,735.14

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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.