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Finding the Fourth Proportional to 28,231.38, 42,347.06 and 9,763.38

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Solution

The fourth proportional to 28,231.38, 42,347.06 and 9,763.38 is: 14,645.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.38 : 42,347.06 = 9,763.38 : x
  2. Step 2: Convert to fraction form
    28,231.38/42,347.06 = 9,763.38/x
  3. Step 3: Cross multiply
    28,231.38x = 42,347.06 × 9,763.38
  4. Step 4: Simplify right side
    28,231.38x = 413,450,438.66
  5. Step 5: Solve for x
    x = 413,450,438.66/28,231.38
  6. Step 6: Final answer
    x = 14,645.07

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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.