Home / 28,021.78-42,038.82-8,301.88

Finding the Fourth Proportional to 28,021.78, 42,038.82 and 8,301.88

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Solution

The fourth proportional to 28,021.78, 42,038.82 and 8,301.88 is: 12,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.78 : 42,038.82 = 8,301.88 : x
  2. Step 2: Convert to fraction form
    28,021.78/42,038.82 = 8,301.88/x
  3. Step 3: Cross multiply
    28,021.78x = 42,038.82 × 8,301.88
  4. Step 4: Simplify right side
    28,021.78x = 349,001,238.98
  5. Step 5: Solve for x
    x = 349,001,238.98/28,021.78
  6. Step 6: Final answer
    x = 12,454.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.