Home / 20,316.89-28,036.67-11,364.54

Finding the Fourth Proportional to 20,316.89, 28,036.67 and 11,364.54

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Solution

The fourth proportional to 20,316.89, 28,036.67 and 11,364.54 is: 15,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.89 : 28,036.67 = 11,364.54 : x
  2. Step 2: Convert to fraction form
    20,316.89/28,036.67 = 11,364.54/x
  3. Step 3: Cross multiply
    20,316.89x = 28,036.67 × 11,364.54
  4. Step 4: Simplify right side
    20,316.89x = 318,623,800.86
  5. Step 5: Solve for x
    x = 318,623,800.86/20,316.89
  6. Step 6: Final answer
    x = 15,682.71

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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.