Home / 28,676.88-39,574.56-15,930.89

Finding the Fourth Proportional to 28,676.88, 39,574.56 and 15,930.89

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Solution

The fourth proportional to 28,676.88, 39,574.56 and 15,930.89 is: 21,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.88 : 39,574.56 = 15,930.89 : x
  2. Step 2: Convert to fraction form
    28,676.88/39,574.56 = 15,930.89/x
  3. Step 3: Cross multiply
    28,676.88x = 39,574.56 × 15,930.89
  4. Step 4: Simplify right side
    28,676.88x = 630,457,764.29
  5. Step 5: Solve for x
    x = 630,457,764.29/28,676.88
  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.