Home / 26,888.47-40,287.85-18,978.02

Finding the Fourth Proportional to 26,888.47, 40,287.85 and 18,978.02

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Solution

The fourth proportional to 26,888.47, 40,287.85 and 18,978.02 is: 28,435.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,888.47 : 40,287.85 = 18,978.02 : x
  2. Step 2: Convert to fraction form
    26,888.47/40,287.85 = 18,978.02/x
  3. Step 3: Cross multiply
    26,888.47x = 40,287.85 × 18,978.02
  4. Step 4: Simplify right side
    26,888.47x = 764,583,623.06
  5. Step 5: Solve for x
    x = 764,583,623.06/26,888.47
  6. Step 6: Final answer
    x = 28,435.37

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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.