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Finding the Fourth Proportional to 28,030.08, 41,978.88 and 15,531.84

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Solution

The fourth proportional to 28,030.08, 41,978.88 and 15,531.84 is: 23,261.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.08 : 41,978.88 = 15,531.84 : x
  2. Step 2: Convert to fraction form
    28,030.08/41,978.88 = 15,531.84/x
  3. Step 3: Cross multiply
    28,030.08x = 41,978.88 × 15,531.84
  4. Step 4: Simplify right side
    28,030.08x = 652,009,247.54
  5. Step 5: Solve for x
    x = 652,009,247.54/28,030.08
  6. Step 6: Final answer
    x = 23,261.06

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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.