Home / 13,945.86-20,928.95-6,555.42

Finding the Fourth Proportional to 13,945.86, 20,928.95 and 6,555.42

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Solution

The fourth proportional to 13,945.86, 20,928.95 and 6,555.42 is: 9,837.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.86 : 20,928.95 = 6,555.42 : x
  2. Step 2: Convert to fraction form
    13,945.86/20,928.95 = 6,555.42/x
  3. Step 3: Cross multiply
    13,945.86x = 20,928.95 × 6,555.42
  4. Step 4: Simplify right side
    13,945.86x = 137,198,024.63
  5. Step 5: Solve for x
    x = 137,198,024.63/13,945.86
  6. Step 6: Final answer
    x = 9,837.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.