Home / 13,215.60-19,821.48-3,853.11

Finding the Fourth Proportional to 13,215.60, 19,821.48 and 3,853.11

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Solution

The fourth proportional to 13,215.60, 19,821.48 and 3,853.11 is: 5,779.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.60 : 19,821.48 = 3,853.11 : x
  2. Step 2: Convert to fraction form
    13,215.60/19,821.48 = 3,853.11/x
  3. Step 3: Cross multiply
    13,215.60x = 19,821.48 × 3,853.11
  4. Step 4: Simplify right side
    13,215.60x = 76,374,342.80
  5. Step 5: Solve for x
    x = 76,374,342.80/13,215.60
  6. Step 6: Final answer
    x = 5,779.11

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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.