Home / 20,316.86-28,037.30-11,364.50

Finding the Fourth Proportional to 20,316.86, 28,037.30 and 11,364.50

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Solution

The fourth proportional to 20,316.86, 28,037.30 and 11,364.50 is: 15,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.86 : 28,037.30 = 11,364.50 : x
  2. Step 2: Convert to fraction form
    20,316.86/28,037.30 = 11,364.50/x
  3. Step 3: Cross multiply
    20,316.86x = 28,037.30 × 11,364.50
  4. Step 4: Simplify right side
    20,316.86x = 318,629,895.85
  5. Step 5: Solve for x
    x = 318,629,895.85/20,316.86
  6. Step 6: Final answer
    x = 15,683.03

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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.