Home / 28,911.72-43,373.38-12,271.62

Finding the Fourth Proportional to 28,911.72, 43,373.38 and 12,271.62

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Solution

The fourth proportional to 28,911.72, 43,373.38 and 12,271.62 is: 18,409.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.72 : 43,373.38 = 12,271.62 : x
  2. Step 2: Convert to fraction form
    28,911.72/43,373.38 = 12,271.62/x
  3. Step 3: Cross multiply
    28,911.72x = 43,373.38 × 12,271.62
  4. Step 4: Simplify right side
    28,911.72x = 532,261,637.48
  5. Step 5: Solve for x
    x = 532,261,637.48/28,911.72
  6. Step 6: Final answer
    x = 18,409.89

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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.