Home / 28,064.56-38,728.96-15,317.68

Finding the Fourth Proportional to 28,064.56, 38,728.96 and 15,317.68

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Solution

The fourth proportional to 28,064.56, 38,728.96 and 15,317.68 is: 21,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.56 : 38,728.96 = 15,317.68 : x
  2. Step 2: Convert to fraction form
    28,064.56/38,728.96 = 15,317.68/x
  3. Step 3: Cross multiply
    28,064.56x = 38,728.96 × 15,317.68
  4. Step 4: Simplify right side
    28,064.56x = 593,237,816.01
  5. Step 5: Solve for x
    x = 593,237,816.01/28,064.56
  6. Step 6: Final answer
    x = 21,138.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.