Home / 28,150.72-38,848.56-15,575.68

Finding the Fourth Proportional to 28,150.72, 38,848.56 and 15,575.68

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Solution

The fourth proportional to 28,150.72, 38,848.56 and 15,575.68 is: 21,494.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,150.72 : 38,848.56 = 15,575.68 : x
  2. Step 2: Convert to fraction form
    28,150.72/38,848.56 = 15,575.68/x
  3. Step 3: Cross multiply
    28,150.72x = 38,848.56 × 15,575.68
  4. Step 4: Simplify right side
    28,150.72x = 605,092,739.02
  5. Step 5: Solve for x
    x = 605,092,739.02/28,150.72
  6. Step 6: Final answer
    x = 21,494.75

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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.