Home / 26,478.12-39,696.30-18,132.90

Finding the Fourth Proportional to 26,478.12, 39,696.30 and 18,132.90

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Solution

The fourth proportional to 26,478.12, 39,696.30 and 18,132.90 is: 27,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,478.12 : 39,696.30 = 18,132.90 : x
  2. Step 2: Convert to fraction form
    26,478.12/39,696.30 = 18,132.90/x
  3. Step 3: Cross multiply
    26,478.12x = 39,696.30 × 18,132.90
  4. Step 4: Simplify right side
    26,478.12x = 719,809,038.27
  5. Step 5: Solve for x
    x = 719,809,038.27/26,478.12
  6. Step 6: Final answer
    x = 27,185.05

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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.