Home / 13,421.33-18,521.49-7,452.98

Finding the Fourth Proportional to 13,421.33, 18,521.49 and 7,452.98

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Solution

The fourth proportional to 13,421.33, 18,521.49 and 7,452.98 is: 10,285.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.33 : 18,521.49 = 7,452.98 : x
  2. Step 2: Convert to fraction form
    13,421.33/18,521.49 = 7,452.98/x
  3. Step 3: Cross multiply
    13,421.33x = 18,521.49 × 7,452.98
  4. Step 4: Simplify right side
    13,421.33x = 138,040,294.54
  5. Step 5: Solve for x
    x = 138,040,294.54/13,421.33
  6. Step 6: Final answer
    x = 10,285.14

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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.