Home / 13,890.84-20,826.48-5,124.60

Finding the Fourth Proportional to 13,890.84, 20,826.48 and 5,124.60

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Solution

The fourth proportional to 13,890.84, 20,826.48 and 5,124.60 is: 7,683.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.84 : 20,826.48 = 5,124.60 : x
  2. Step 2: Convert to fraction form
    13,890.84/20,826.48 = 5,124.60/x
  3. Step 3: Cross multiply
    13,890.84x = 20,826.48 × 5,124.60
  4. Step 4: Simplify right side
    13,890.84x = 106,727,379.41
  5. Step 5: Solve for x
    x = 106,727,379.41/13,890.84
  6. Step 6: Final answer
    x = 7,683.29

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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.