Home / 28,518.95-42,789.36-11,874.52

Finding the Fourth Proportional to 28,518.95, 42,789.36 and 11,874.52

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Solution

The fourth proportional to 28,518.95, 42,789.36 and 11,874.52 is: 17,816.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.95 : 42,789.36 = 11,874.52 : x
  2. Step 2: Convert to fraction form
    28,518.95/42,789.36 = 11,874.52/x
  3. Step 3: Cross multiply
    28,518.95x = 42,789.36 × 11,874.52
  4. Step 4: Simplify right side
    28,518.95x = 508,102,968.43
  5. Step 5: Solve for x
    x = 508,102,968.43/28,518.95
  6. Step 6: Final answer
    x = 17,816.33

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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.