Home / 15,494.25-21,438.36-13,508.94

Finding the Fourth Proportional to 15,494.25, 21,438.36 and 13,508.94

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Solution

The fourth proportional to 15,494.25, 21,438.36 and 13,508.94 is: 18,691.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,494.25 : 21,438.36 = 13,508.94 : x
  2. Step 2: Convert to fraction form
    15,494.25/21,438.36 = 13,508.94/x
  3. Step 3: Cross multiply
    15,494.25x = 21,438.36 × 13,508.94
  4. Step 4: Simplify right side
    15,494.25x = 289,609,518.94
  5. Step 5: Solve for x
    x = 289,609,518.94/15,494.25
  6. Step 6: Final answer
    x = 18,691.42

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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.