Home / 28,409.40-42,614.55-11,765.43

Finding the Fourth Proportional to 28,409.40, 42,614.55 and 11,765.43

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Solution

The fourth proportional to 28,409.40, 42,614.55 and 11,765.43 is: 17,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.40 : 42,614.55 = 11,765.43 : x
  2. Step 2: Convert to fraction form
    28,409.40/42,614.55 = 11,765.43/x
  3. Step 3: Cross multiply
    28,409.40x = 42,614.55 × 11,765.43
  4. Step 4: Simplify right side
    28,409.40x = 501,378,505.01
  5. Step 5: Solve for x
    x = 501,378,505.01/28,409.40
  6. Step 6: Final answer
    x = 17,648.33

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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.