Home / 28,106.19-42,146.73-8,379.45

Finding the Fourth Proportional to 28,106.19, 42,146.73 and 8,379.45

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Solution

The fourth proportional to 28,106.19, 42,146.73 and 8,379.45 is: 12,565.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.19 : 42,146.73 = 8,379.45 : x
  2. Step 2: Convert to fraction form
    28,106.19/42,146.73 = 8,379.45/x
  3. Step 3: Cross multiply
    28,106.19x = 42,146.73 × 8,379.45
  4. Step 4: Simplify right side
    28,106.19x = 353,166,416.70
  5. Step 5: Solve for x
    x = 353,166,416.70/28,106.19
  6. Step 6: Final answer
    x = 12,565.43

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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.