Home / 11,645.78-17,465.75-4,978.98

Finding the Fourth Proportional to 11,645.78, 17,465.75 and 4,978.98

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Solution

The fourth proportional to 11,645.78, 17,465.75 and 4,978.98 is: 7,467.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,645.78 : 17,465.75 = 4,978.98 : x
  2. Step 2: Convert to fraction form
    11,645.78/17,465.75 = 4,978.98/x
  3. Step 3: Cross multiply
    11,645.78x = 17,465.75 × 4,978.98
  4. Step 4: Simplify right side
    11,645.78x = 86,961,595.04
  5. Step 5: Solve for x
    x = 86,961,595.04/11,645.78
  6. Step 6: Final answer
    x = 7,467.22

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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.