Home / 13,903.90-20,856.03-4,543.85

Finding the Fourth Proportional to 13,903.90, 20,856.03 and 4,543.85

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Solution

The fourth proportional to 13,903.90, 20,856.03 and 4,543.85 is: 6,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.90 : 20,856.03 = 4,543.85 : x
  2. Step 2: Convert to fraction form
    13,903.90/20,856.03 = 4,543.85/x
  3. Step 3: Cross multiply
    13,903.90x = 20,856.03 × 4,543.85
  4. Step 4: Simplify right side
    13,903.90x = 94,766,615.26
  5. Step 5: Solve for x
    x = 94,766,615.26/13,903.90
  6. Step 6: Final answer
    x = 6,815.83

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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.