Home / 28,980.04-43,472.78-12,111

Finding the Fourth Proportional to 28,980.04, 43,472.78 and 12,111

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Solution

The fourth proportional to 28,980.04, 43,472.78 and 12,111 is: 18,167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.04 : 43,472.78 = 12,111 : x
  2. Step 2: Convert to fraction form
    28,980.04/43,472.78 = 12,111/x
  3. Step 3: Cross multiply
    28,980.04x = 43,472.78 × 12,111
  4. Step 4: Simplify right side
    28,980.04x = 526,498,838.58
  5. Step 5: Solve for x
    x = 526,498,838.58/28,980.04
  6. Step 6: Final answer
    x = 18,167.64

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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.