Home / 13,215.15-19,817.60-6,636.74

Finding the Fourth Proportional to 13,215.15, 19,817.60 and 6,636.74

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Solution

The fourth proportional to 13,215.15, 19,817.60 and 6,636.74 is: 9,952.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.15 : 19,817.60 = 6,636.74 : x
  2. Step 2: Convert to fraction form
    13,215.15/19,817.60 = 6,636.74/x
  3. Step 3: Cross multiply
    13,215.15x = 19,817.60 × 6,636.74
  4. Step 4: Simplify right side
    13,215.15x = 131,524,126.35
  5. Step 5: Solve for x
    x = 131,524,126.35/13,215.15
  6. Step 6: Final answer
    x = 9,952.53

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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.