Home / 14,190.96-21,285.63-5,421.90

Finding the Fourth Proportional to 14,190.96, 21,285.63 and 5,421.90

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Solution

The fourth proportional to 14,190.96, 21,285.63 and 5,421.90 is: 8,132.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.96 : 21,285.63 = 5,421.90 : x
  2. Step 2: Convert to fraction form
    14,190.96/21,285.63 = 5,421.90/x
  3. Step 3: Cross multiply
    14,190.96x = 21,285.63 × 5,421.90
  4. Step 4: Simplify right side
    14,190.96x = 115,408,557.30
  5. Step 5: Solve for x
    x = 115,408,557.30/14,190.96
  6. Step 6: Final answer
    x = 8,132.54

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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.