Home / 13,548.88-20,312.40-12,455.38

Finding the Fourth Proportional to 13,548.88, 20,312.40 and 12,455.38

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Solution

The fourth proportional to 13,548.88, 20,312.40 and 12,455.38 is: 18,673.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,548.88 : 20,312.40 = 12,455.38 : x
  2. Step 2: Convert to fraction form
    13,548.88/20,312.40 = 12,455.38/x
  3. Step 3: Cross multiply
    13,548.88x = 20,312.40 × 12,455.38
  4. Step 4: Simplify right side
    13,548.88x = 252,998,660.71
  5. Step 5: Solve for x
    x = 252,998,660.71/13,548.88
  6. Step 6: Final answer
    x = 18,673.03

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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.