Home / 28,647.81-39,539.03-18,040.77

Finding the Fourth Proportional to 28,647.81, 39,539.03 and 18,040.77

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Solution

The fourth proportional to 28,647.81, 39,539.03 and 18,040.77 is: 24,899.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.81 : 39,539.03 = 18,040.77 : x
  2. Step 2: Convert to fraction form
    28,647.81/39,539.03 = 18,040.77/x
  3. Step 3: Cross multiply
    28,647.81x = 39,539.03 × 18,040.77
  4. Step 4: Simplify right side
    28,647.81x = 713,314,456.05
  5. Step 5: Solve for x
    x = 713,314,456.05/28,647.81
  6. Step 6: Final answer
    x = 24,899.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.