Home / 13,575.06-20,363.31-4,215.78

Finding the Fourth Proportional to 13,575.06, 20,363.31 and 4,215.78

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Solution

The fourth proportional to 13,575.06, 20,363.31 and 4,215.78 is: 6,323.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.06 : 20,363.31 = 4,215.78 : x
  2. Step 2: Convert to fraction form
    13,575.06/20,363.31 = 4,215.78/x
  3. Step 3: Cross multiply
    13,575.06x = 20,363.31 × 4,215.78
  4. Step 4: Simplify right side
    13,575.06x = 85,847,235.03
  5. Step 5: Solve for x
    x = 85,847,235.03/13,575.06
  6. Step 6: Final answer
    x = 6,323.89

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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.