Home / 18,404.10-27,638.55-13,479.30

Finding the Fourth Proportional to 18,404.10, 27,638.55 and 13,479.30

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Solution

The fourth proportional to 18,404.10, 27,638.55 and 13,479.30 is: 20,242.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.10 : 27,638.55 = 13,479.30 : x
  2. Step 2: Convert to fraction form
    18,404.10/27,638.55 = 13,479.30/x
  3. Step 3: Cross multiply
    18,404.10x = 27,638.55 × 13,479.30
  4. Step 4: Simplify right side
    18,404.10x = 372,548,307.02
  5. Step 5: Solve for x
    x = 372,548,307.02/18,404.10
  6. Step 6: Final answer
    x = 20,242.68

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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.