Home / 28,291.08-42,420.36-11,662.56

Finding the Fourth Proportional to 28,291.08, 42,420.36 and 11,662.56

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Solution

The fourth proportional to 28,291.08, 42,420.36 and 11,662.56 is: 17,487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.08 : 42,420.36 = 11,662.56 : x
  2. Step 2: Convert to fraction form
    28,291.08/42,420.36 = 11,662.56/x
  3. Step 3: Cross multiply
    28,291.08x = 42,420.36 × 11,662.56
  4. Step 4: Simplify right side
    28,291.08x = 494,729,993.72
  5. Step 5: Solve for x
    x = 494,729,993.72/28,291.08
  6. Step 6: Final answer
    x = 17,487.14

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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.