Home / 18,266.79-27,408.85-12,653.09

Finding the Fourth Proportional to 18,266.79, 27,408.85 and 12,653.09

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Solution

The fourth proportional to 18,266.79, 27,408.85 and 12,653.09 is: 18,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266.79 : 27,408.85 = 12,653.09 : x
  2. Step 2: Convert to fraction form
    18,266.79/27,408.85 = 12,653.09/x
  3. Step 3: Cross multiply
    18,266.79x = 27,408.85 × 12,653.09
  4. Step 4: Simplify right side
    18,266.79x = 346,806,645.85
  5. Step 5: Solve for x
    x = 346,806,645.85/18,266.79
  6. Step 6: Final answer
    x = 18,985.64

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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.