Home / 20,985.98-28,960.58-11,554.53

Finding the Fourth Proportional to 20,985.98, 28,960.58 and 11,554.53

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Solution

The fourth proportional to 20,985.98, 28,960.58 and 11,554.53 is: 15,945.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.98 : 28,960.58 = 11,554.53 : x
  2. Step 2: Convert to fraction form
    20,985.98/28,960.58 = 11,554.53/x
  3. Step 3: Cross multiply
    20,985.98x = 28,960.58 × 11,554.53
  4. Step 4: Simplify right side
    20,985.98x = 334,625,832.65
  5. Step 5: Solve for x
    x = 334,625,832.65/20,985.98
  6. Step 6: Final answer
    x = 15,945.21

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