Home / 28,764.18-43,128.65-11,213.50

Finding the Fourth Proportional to 28,764.18, 43,128.65 and 11,213.50

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Solution

The fourth proportional to 28,764.18, 43,128.65 and 11,213.50 is: 16,813.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,764.18 : 43,128.65 = 11,213.50 : x
  2. Step 2: Convert to fraction form
    28,764.18/43,128.65 = 11,213.50/x
  3. Step 3: Cross multiply
    28,764.18x = 43,128.65 × 11,213.50
  4. Step 4: Simplify right side
    28,764.18x = 483,623,060.71
  5. Step 5: Solve for x
    x = 483,623,060.71/28,764.18
  6. Step 6: Final answer
    x = 16,813.38

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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.