Home / 13,742.46-20,615.40-4,379.94

Finding the Fourth Proportional to 13,742.46, 20,615.40 and 4,379.94

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Solution

The fourth proportional to 13,742.46, 20,615.40 and 4,379.94 is: 6,570.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.46 : 20,615.40 = 4,379.94 : x
  2. Step 2: Convert to fraction form
    13,742.46/20,615.40 = 4,379.94/x
  3. Step 3: Cross multiply
    13,742.46x = 20,615.40 × 4,379.94
  4. Step 4: Simplify right side
    13,742.46x = 90,294,215.08
  5. Step 5: Solve for x
    x = 90,294,215.08/13,742.46
  6. Step 6: Final answer
    x = 6,570.46

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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.