Home / 21,567.04-29,760.08-12,135.36

Finding the Fourth Proportional to 21,567.04, 29,760.08 and 12,135.36

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Solution

The fourth proportional to 21,567.04, 29,760.08 and 12,135.36 is: 16,745.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.04 : 29,760.08 = 12,135.36 : x
  2. Step 2: Convert to fraction form
    21,567.04/29,760.08 = 12,135.36/x
  3. Step 3: Cross multiply
    21,567.04x = 29,760.08 × 12,135.36
  4. Step 4: Simplify right side
    21,567.04x = 361,149,284.43
  5. Step 5: Solve for x
    x = 361,149,284.43/21,567.04
  6. Step 6: Final answer
    x = 16,745.43

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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.