Home / 12,762.40-19,145.70-3,995.20

Finding the Fourth Proportional to 12,762.40, 19,145.70 and 3,995.20

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Solution

The fourth proportional to 12,762.40, 19,145.70 and 3,995.20 is: 5,993.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,762.40 : 19,145.70 = 3,995.20 : x
  2. Step 2: Convert to fraction form
    12,762.40/19,145.70 = 3,995.20/x
  3. Step 3: Cross multiply
    12,762.40x = 19,145.70 × 3,995.20
  4. Step 4: Simplify right side
    12,762.40x = 76,490,900.64
  5. Step 5: Solve for x
    x = 76,490,900.64/12,762.40
  6. Step 6: Final answer
    x = 5,993.46

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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.