Home / 28,021.28-42,038.07-8,301.38

Finding the Fourth Proportional to 28,021.28, 42,038.07 and 8,301.38

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Solution

The fourth proportional to 28,021.28, 42,038.07 and 8,301.38 is: 12,453.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.28 : 42,038.07 = 8,301.38 : x
  2. Step 2: Convert to fraction form
    28,021.28/42,038.07 = 8,301.38/x
  3. Step 3: Cross multiply
    28,021.28x = 42,038.07 × 8,301.38
  4. Step 4: Simplify right side
    28,021.28x = 348,973,993.54
  5. Step 5: Solve for x
    x = 348,973,993.54/28,021.28
  6. Step 6: Final answer
    x = 12,453.89

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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.