Home / 20,316.72-28,039.67-11,364.72

Finding the Fourth Proportional to 20,316.72, 28,039.67 and 11,364.72

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Solution

The fourth proportional to 20,316.72, 28,039.67 and 11,364.72 is: 15,684.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.72 : 28,039.67 = 11,364.72 : x
  2. Step 2: Convert to fraction form
    20,316.72/28,039.67 = 11,364.72/x
  3. Step 3: Cross multiply
    20,316.72x = 28,039.67 × 11,364.72
  4. Step 4: Simplify right side
    20,316.72x = 318,662,998.44
  5. Step 5: Solve for x
    x = 318,662,998.44/20,316.72
  6. Step 6: Final answer
    x = 15,684.77

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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.