Home / 21,462.44-29,618.06-13,515.12

Finding the Fourth Proportional to 21,462.44, 29,618.06 and 13,515.12

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Solution

The fourth proportional to 21,462.44, 29,618.06 and 13,515.12 is: 18,650.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,462.44 : 29,618.06 = 13,515.12 : x
  2. Step 2: Convert to fraction form
    21,462.44/29,618.06 = 13,515.12/x
  3. Step 3: Cross multiply
    21,462.44x = 29,618.06 × 13,515.12
  4. Step 4: Simplify right side
    21,462.44x = 400,291,567.49
  5. Step 5: Solve for x
    x = 400,291,567.49/21,462.44
  6. Step 6: Final answer
    x = 18,650.80

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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.