Home / 28,976.88-43,456.80-12,336.72

Finding the Fourth Proportional to 28,976.88, 43,456.80 and 12,336.72

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Solution

The fourth proportional to 28,976.88, 43,456.80 and 12,336.72 is: 18,501.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.88 : 43,456.80 = 12,336.72 : x
  2. Step 2: Convert to fraction form
    28,976.88/43,456.80 = 12,336.72/x
  3. Step 3: Cross multiply
    28,976.88x = 43,456.80 × 12,336.72
  4. Step 4: Simplify right side
    28,976.88x = 536,114,373.70
  5. Step 5: Solve for x
    x = 536,114,373.70/28,976.88
  6. Step 6: Final answer
    x = 18,501.45

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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.