Home / 20,333.85-28,054.31-11,379.93

Finding the Fourth Proportional to 20,333.85, 28,054.31 and 11,379.93

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Solution

The fourth proportional to 20,333.85, 28,054.31 and 11,379.93 is: 15,700.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.85 : 28,054.31 = 11,379.93 : x
  2. Step 2: Convert to fraction form
    20,333.85/28,054.31 = 11,379.93/x
  3. Step 3: Cross multiply
    20,333.85x = 28,054.31 × 11,379.93
  4. Step 4: Simplify right side
    20,333.85x = 319,255,943.73
  5. Step 5: Solve for x
    x = 319,255,943.73/20,333.85
  6. Step 6: Final answer
    x = 15,700.72

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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.