Home / 28,543.20-42,811.26-11,905.26

Finding the Fourth Proportional to 28,543.20, 42,811.26 and 11,905.26

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Solution

The fourth proportional to 28,543.20, 42,811.26 and 11,905.26 is: 17,856.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.20 : 42,811.26 = 11,905.26 : x
  2. Step 2: Convert to fraction form
    28,543.20/42,811.26 = 11,905.26/x
  3. Step 3: Cross multiply
    28,543.20x = 42,811.26 × 11,905.26
  4. Step 4: Simplify right side
    28,543.20x = 509,679,181.23
  5. Step 5: Solve for x
    x = 509,679,181.23/28,543.20
  6. Step 6: Final answer
    x = 17,856.41

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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.