Home / 21,567.86-29,760.45-12,135.86

Finding the Fourth Proportional to 21,567.86, 29,760.45 and 12,135.86

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Solution

The fourth proportional to 21,567.86, 29,760.45 and 12,135.86 is: 16,745.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.86 : 29,760.45 = 12,135.86 : x
  2. Step 2: Convert to fraction form
    21,567.86/29,760.45 = 12,135.86/x
  3. Step 3: Cross multiply
    21,567.86x = 29,760.45 × 12,135.86
  4. Step 4: Simplify right side
    21,567.86x = 361,168,654.74
  5. Step 5: Solve for x
    x = 361,168,654.74/21,567.86
  6. Step 6: Final answer
    x = 16,745.69

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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.