Home / 28,164.58-38,865.01-15,589.54

Finding the Fourth Proportional to 28,164.58, 38,865.01 and 15,589.54

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Solution

The fourth proportional to 28,164.58, 38,865.01 and 15,589.54 is: 21,512.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.58 : 38,865.01 = 15,589.54 : x
  2. Step 2: Convert to fraction form
    28,164.58/38,865.01 = 15,589.54/x
  3. Step 3: Cross multiply
    28,164.58x = 38,865.01 × 15,589.54
  4. Step 4: Simplify right side
    28,164.58x = 605,887,628.00
  5. Step 5: Solve for x
    x = 605,887,628.00/28,164.58
  6. Step 6: Final answer
    x = 21,512.40

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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.