Home / 13,930.64-20,890.70-5,607.82

Finding the Fourth Proportional to 13,930.64, 20,890.70 and 5,607.82

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Solution

The fourth proportional to 13,930.64, 20,890.70 and 5,607.82 is: 8,409.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.64 : 20,890.70 = 5,607.82 : x
  2. Step 2: Convert to fraction form
    13,930.64/20,890.70 = 5,607.82/x
  3. Step 3: Cross multiply
    13,930.64x = 20,890.70 × 5,607.82
  4. Step 4: Simplify right side
    13,930.64x = 117,151,285.27
  5. Step 5: Solve for x
    x = 117,151,285.27/13,930.64
  6. Step 6: Final answer
    x = 8,409.61

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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.