Home / 28,157.56-38,858.66-15,582.31

Finding the Fourth Proportional to 28,157.56, 38,858.66 and 15,582.31

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Solution

The fourth proportional to 28,157.56, 38,858.66 and 15,582.31 is: 21,504.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.56 : 38,858.66 = 15,582.31 : x
  2. Step 2: Convert to fraction form
    28,157.56/38,858.66 = 15,582.31/x
  3. Step 3: Cross multiply
    28,157.56x = 38,858.66 × 15,582.31
  4. Step 4: Simplify right side
    28,157.56x = 605,507,686.30
  5. Step 5: Solve for x
    x = 605,507,686.30/28,157.56
  6. Step 6: Final answer
    x = 21,504.27

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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.