Home / 13,945.86-20,921.34-4,586.40

Finding the Fourth Proportional to 13,945.86, 20,921.34 and 4,586.40

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Solution

The fourth proportional to 13,945.86, 20,921.34 and 4,586.40 is: 6,880.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.86 : 20,921.34 = 4,586.40 : x
  2. Step 2: Convert to fraction form
    13,945.86/20,921.34 = 4,586.40/x
  3. Step 3: Cross multiply
    13,945.86x = 20,921.34 × 4,586.40
  4. Step 4: Simplify right side
    13,945.86x = 95,953,633.78
  5. Step 5: Solve for x
    x = 95,953,633.78/13,945.86
  6. Step 6: Final answer
    x = 6,880.44

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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.