Home / 28,686.88-43,035.66-12,891.52

Finding the Fourth Proportional to 28,686.88, 43,035.66 and 12,891.52

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Solution

The fourth proportional to 28,686.88, 43,035.66 and 12,891.52 is: 19,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.88 : 43,035.66 = 12,891.52 : x
  2. Step 2: Convert to fraction form
    28,686.88/43,035.66 = 12,891.52/x
  3. Step 3: Cross multiply
    28,686.88x = 43,035.66 × 12,891.52
  4. Step 4: Simplify right side
    28,686.88x = 554,795,071.60
  5. Step 5: Solve for x
    x = 554,795,071.60/28,686.88
  6. Step 6: Final answer
    x = 19,339.68

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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.