Home / 28,664.63-42,979.49-12,866.60

Finding the Fourth Proportional to 28,664.63, 42,979.49 and 12,866.60

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Solution

The fourth proportional to 28,664.63, 42,979.49 and 12,866.60 is: 19,292.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.63 : 42,979.49 = 12,866.60 : x
  2. Step 2: Convert to fraction form
    28,664.63/42,979.49 = 12,866.60/x
  3. Step 3: Cross multiply
    28,664.63x = 42,979.49 × 12,866.60
  4. Step 4: Simplify right side
    28,664.63x = 552,999,719.45
  5. Step 5: Solve for x
    x = 552,999,719.45/28,664.63
  6. Step 6: Final answer
    x = 19,292.06

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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.