Home / 13,741.28-18,953.24-8,439.02

Finding the Fourth Proportional to 13,741.28, 18,953.24 and 8,439.02

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Solution

The fourth proportional to 13,741.28, 18,953.24 and 8,439.02 is: 11,639.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,741.28 : 18,953.24 = 8,439.02 : x
  2. Step 2: Convert to fraction form
    13,741.28/18,953.24 = 8,439.02/x
  3. Step 3: Cross multiply
    13,741.28x = 18,953.24 × 8,439.02
  4. Step 4: Simplify right side
    13,741.28x = 159,946,771.42
  5. Step 5: Solve for x
    x = 159,946,771.42/13,741.28
  6. Step 6: Final answer
    x = 11,639.87

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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.