Home / 28,157.44-38,856.72-15,582.28

Finding the Fourth Proportional to 28,157.44, 38,856.72 and 15,582.28

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Solution

The fourth proportional to 28,157.44, 38,856.72 and 15,582.28 is: 21,503.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.44 : 38,856.72 = 15,582.28 : x
  2. Step 2: Convert to fraction form
    28,157.44/38,856.72 = 15,582.28/x
  3. Step 3: Cross multiply
    28,157.44x = 38,856.72 × 15,582.28
  4. Step 4: Simplify right side
    28,157.44x = 605,476,290.92
  5. Step 5: Solve for x
    x = 605,476,290.92/28,157.44
  6. Step 6: Final answer
    x = 21,503.24

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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.