Home / 13,421.50-18,521.92-7,453.72

Finding the Fourth Proportional to 13,421.50, 18,521.92 and 7,453.72

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Solution

The fourth proportional to 13,421.50, 18,521.92 and 7,453.72 is: 10,286.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.50 : 18,521.92 = 7,453.72 : x
  2. Step 2: Convert to fraction form
    13,421.50/18,521.92 = 7,453.72/x
  3. Step 3: Cross multiply
    13,421.50x = 18,521.92 × 7,453.72
  4. Step 4: Simplify right side
    13,421.50x = 138,057,196.08
  5. Step 5: Solve for x
    x = 138,057,196.08/13,421.50
  6. Step 6: Final answer
    x = 10,286.27

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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.