Home / 13,421.70-18,521.97-7,453.22

Finding the Fourth Proportional to 13,421.70, 18,521.97 and 7,453.22

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Solution

The fourth proportional to 13,421.70, 18,521.97 and 7,453.22 is: 10,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.70 : 18,521.97 = 7,453.22 : x
  2. Step 2: Convert to fraction form
    13,421.70/18,521.97 = 7,453.22/x
  3. Step 3: Cross multiply
    13,421.70x = 18,521.97 × 7,453.22
  4. Step 4: Simplify right side
    13,421.70x = 138,048,196.68
  5. Step 5: Solve for x
    x = 138,048,196.68/13,421.70
  6. Step 6: Final answer
    x = 10,285.45

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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.