Home / 12,763.88-19,145.81-4,978.16

Finding the Fourth Proportional to 12,763.88, 19,145.81 and 4,978.16

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Solution

The fourth proportional to 12,763.88, 19,145.81 and 4,978.16 is: 7,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763.88 : 19,145.81 = 4,978.16 : x
  2. Step 2: Convert to fraction form
    12,763.88/19,145.81 = 4,978.16/x
  3. Step 3: Cross multiply
    12,763.88x = 19,145.81 × 4,978.16
  4. Step 4: Simplify right side
    12,763.88x = 95,310,905.51
  5. Step 5: Solve for x
    x = 95,310,905.51/12,763.88
  6. Step 6: Final answer
    x = 7,467.24

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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.