Home / 28,251.64-38,987.46-15,676.36

Finding the Fourth Proportional to 28,251.64, 38,987.46 and 15,676.36

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Solution

The fourth proportional to 28,251.64, 38,987.46 and 15,676.36 is: 21,633.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.64 : 38,987.46 = 15,676.36 : x
  2. Step 2: Convert to fraction form
    28,251.64/38,987.46 = 15,676.36/x
  3. Step 3: Cross multiply
    28,251.64x = 38,987.46 × 15,676.36
  4. Step 4: Simplify right side
    28,251.64x = 611,181,458.45
  5. Step 5: Solve for x
    x = 611,181,458.45/28,251.64
  6. Step 6: Final answer
    x = 21,633.49

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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.