Home / 28,748-43,138.40-11,213.73

Finding the Fourth Proportional to 28,748, 43,138.40 and 11,213.73

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Solution

The fourth proportional to 28,748, 43,138.40 and 11,213.73 is: 16,826.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,748 : 43,138.40 = 11,213.73 : x
  2. Step 2: Convert to fraction form
    28,748/43,138.40 = 11,213.73/x
  3. Step 3: Cross multiply
    28,748x = 43,138.40 × 11,213.73
  4. Step 4: Simplify right side
    28,748x = 483,742,370.23
  5. Step 5: Solve for x
    x = 483,742,370.23/28,748
  6. Step 6: Final answer
    x = 16,826.99

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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.