Home / 28,529.25-42,808.59-12,739.11

Finding the Fourth Proportional to 28,529.25, 42,808.59 and 12,739.11

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Solution

The fourth proportional to 28,529.25, 42,808.59 and 12,739.11 is: 19,115.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,529.25 : 42,808.59 = 12,739.11 : x
  2. Step 2: Convert to fraction form
    28,529.25/42,808.59 = 12,739.11/x
  3. Step 3: Cross multiply
    28,529.25x = 42,808.59 × 12,739.11
  4. Step 4: Simplify right side
    28,529.25x = 545,343,336.95
  5. Step 5: Solve for x
    x = 545,343,336.95/28,529.25
  6. Step 6: Final answer
    x = 19,115.24

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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.