Home / 13,078.80-19,615.46-4,311.66

Finding the Fourth Proportional to 13,078.80, 19,615.46 and 4,311.66

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Solution

The fourth proportional to 13,078.80, 19,615.46 and 4,311.66 is: 6,466.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.80 : 19,615.46 = 4,311.66 : x
  2. Step 2: Convert to fraction form
    13,078.80/19,615.46 = 4,311.66/x
  3. Step 3: Cross multiply
    13,078.80x = 19,615.46 × 4,311.66
  4. Step 4: Simplify right side
    13,078.80x = 84,575,172.71
  5. Step 5: Solve for x
    x = 84,575,172.71/13,078.80
  6. Step 6: Final answer
    x = 6,466.59

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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.