Home / 28,251.36-38,988.72-15,676.14

Finding the Fourth Proportional to 28,251.36, 38,988.72 and 15,676.14

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Solution

The fourth proportional to 28,251.36, 38,988.72 and 15,676.14 is: 21,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.36 : 38,988.72 = 15,676.14 : x
  2. Step 2: Convert to fraction form
    28,251.36/38,988.72 = 15,676.14/x
  3. Step 3: Cross multiply
    28,251.36x = 38,988.72 × 15,676.14
  4. Step 4: Simplify right side
    28,251.36x = 611,192,633.14
  5. Step 5: Solve for x
    x = 611,192,633.14/28,251.36
  6. Step 6: Final answer
    x = 21,634.10

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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.