Home / 21,565.94-29,760.78-12,005.68

Finding the Fourth Proportional to 21,565.94, 29,760.78 and 12,005.68

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Solution

The fourth proportional to 21,565.94, 29,760.78 and 12,005.68 is: 16,567.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.94 : 29,760.78 = 12,005.68 : x
  2. Step 2: Convert to fraction form
    21,565.94/29,760.78 = 12,005.68/x
  3. Step 3: Cross multiply
    21,565.94x = 29,760.78 × 12,005.68
  4. Step 4: Simplify right side
    21,565.94x = 357,298,401.23
  5. Step 5: Solve for x
    x = 357,298,401.23/21,565.94
  6. Step 6: Final answer
    x = 16,567.72

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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.