Home / 28,087.20-42,130.44-8,379.36

Finding the Fourth Proportional to 28,087.20, 42,130.44 and 8,379.36

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Solution

The fourth proportional to 28,087.20, 42,130.44 and 8,379.36 is: 12,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.20 : 42,130.44 = 8,379.36 : x
  2. Step 2: Convert to fraction form
    28,087.20/42,130.44 = 8,379.36/x
  3. Step 3: Cross multiply
    28,087.20x = 42,130.44 × 8,379.36
  4. Step 4: Simplify right side
    28,087.20x = 353,026,123.72
  5. Step 5: Solve for x
    x = 353,026,123.72/28,087.20
  6. Step 6: Final answer
    x = 12,568.93

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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.