Home / 20,543.00-28,346.90-11,589.98

Finding the Fourth Proportional to 20,543.00, 28,346.90 and 11,589.98

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Solution

The fourth proportional to 20,543.00, 28,346.90 and 11,589.98 is: 15,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.00 : 28,346.90 = 11,589.98 : x
  2. Step 2: Convert to fraction form
    20,543.00/28,346.90 = 11,589.98/x
  3. Step 3: Cross multiply
    20,543.00x = 28,346.90 × 11,589.98
  4. Step 4: Simplify right side
    20,543.00x = 328,539,804.38
  5. Step 5: Solve for x
    x = 328,539,804.38/20,543.00
  6. Step 6: Final answer
    x = 15,992.79

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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.