Home / 28,864.60-43,313.10-12,221.80

Finding the Fourth Proportional to 28,864.60, 43,313.10 and 12,221.80

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Solution

The fourth proportional to 28,864.60, 43,313.10 and 12,221.80 is: 18,339.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,864.60 : 43,313.10 = 12,221.80 : x
  2. Step 2: Convert to fraction form
    28,864.60/43,313.10 = 12,221.80/x
  3. Step 3: Cross multiply
    28,864.60x = 43,313.10 × 12,221.80
  4. Step 4: Simplify right side
    28,864.60x = 529,364,045.58
  5. Step 5: Solve for x
    x = 529,364,045.58/28,864.60
  6. Step 6: Final answer
    x = 18,339.56

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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.