Home / 28,676.54-39,574.13-15,930.87

Finding the Fourth Proportional to 28,676.54, 39,574.13 and 15,930.87

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Solution

The fourth proportional to 28,676.54, 39,574.13 and 15,930.87 is: 21,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.54 : 39,574.13 = 15,930.87 : x
  2. Step 2: Convert to fraction form
    28,676.54/39,574.13 = 15,930.87/x
  3. Step 3: Cross multiply
    28,676.54x = 39,574.13 × 15,930.87
  4. Step 4: Simplify right side
    28,676.54x = 630,450,240.74
  5. Step 5: Solve for x
    x = 630,450,240.74/28,676.54
  6. Step 6: Final answer
    x = 21,984.88

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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.