Home / 19,701.72-27,178.92-13,330.53

Finding the Fourth Proportional to 19,701.72, 27,178.92 and 13,330.53

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Solution

The fourth proportional to 19,701.72, 27,178.92 and 13,330.53 is: 18,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.72 : 27,178.92 = 13,330.53 : x
  2. Step 2: Convert to fraction form
    19,701.72/27,178.92 = 13,330.53/x
  3. Step 3: Cross multiply
    19,701.72x = 27,178.92 × 13,330.53
  4. Step 4: Simplify right side
    19,701.72x = 362,309,408.43
  5. Step 5: Solve for x
    x = 362,309,408.43/19,701.72
  6. Step 6: Final answer
    x = 18,389.73

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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.