Home / 21,565.45-29,760.09-12,005.17

Finding the Fourth Proportional to 21,565.45, 29,760.09 and 12,005.17

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Solution

The fourth proportional to 21,565.45, 29,760.09 and 12,005.17 is: 16,567.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.45 : 29,760.09 = 12,005.17 : x
  2. Step 2: Convert to fraction form
    21,565.45/29,760.09 = 12,005.17/x
  3. Step 3: Cross multiply
    21,565.45x = 29,760.09 × 12,005.17
  4. Step 4: Simplify right side
    21,565.45x = 357,274,939.67
  5. Step 5: Solve for x
    x = 357,274,939.67/21,565.45
  6. Step 6: Final answer
    x = 16,567.01

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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.