Home / 28,559.88-42,777.43-11,869.31

Finding the Fourth Proportional to 28,559.88, 42,777.43 and 11,869.31

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Solution

The fourth proportional to 28,559.88, 42,777.43 and 11,869.31 is: 17,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.88 : 42,777.43 = 11,869.31 : x
  2. Step 2: Convert to fraction form
    28,559.88/42,777.43 = 11,869.31/x
  3. Step 3: Cross multiply
    28,559.88x = 42,777.43 × 11,869.31
  4. Step 4: Simplify right side
    28,559.88x = 507,738,577.67
  5. Step 5: Solve for x
    x = 507,738,577.67/28,559.88
  6. Step 6: Final answer
    x = 17,778.04

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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.