Home / 9,871.10-13,615.44-6,338.60

Finding the Fourth Proportional to 9,871.10, 13,615.44 and 6,338.60

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Solution

The fourth proportional to 9,871.10, 13,615.44 and 6,338.60 is: 8,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.10 : 13,615.44 = 6,338.60 : x
  2. Step 2: Convert to fraction form
    9,871.10/13,615.44 = 6,338.60/x
  3. Step 3: Cross multiply
    9,871.10x = 13,615.44 × 6,338.60
  4. Step 4: Simplify right side
    9,871.10x = 86,302,827.98
  5. Step 5: Solve for x
    x = 86,302,827.98/9,871.10
  6. Step 6: Final answer
    x = 8,742.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.