Home / 13,681.58-20,516.87-6,659.54

Finding the Fourth Proportional to 13,681.58, 20,516.87 and 6,659.54

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Solution

The fourth proportional to 13,681.58, 20,516.87 and 6,659.54 is: 9,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.58 : 20,516.87 = 6,659.54 : x
  2. Step 2: Convert to fraction form
    13,681.58/20,516.87 = 6,659.54/x
  3. Step 3: Cross multiply
    13,681.58x = 20,516.87 × 6,659.54
  4. Step 4: Simplify right side
    13,681.58x = 136,632,946.42
  5. Step 5: Solve for x
    x = 136,632,946.42/13,681.58
  6. Step 6: Final answer
    x = 9,986.64

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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.