Home / 21,035.94-31,553.65-12,164.61

Finding the Fourth Proportional to 21,035.94, 31,553.65 and 12,164.61

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Solution

The fourth proportional to 21,035.94, 31,553.65 and 12,164.61 is: 18,246.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.94 : 31,553.65 = 12,164.61 : x
  2. Step 2: Convert to fraction form
    21,035.94/31,553.65 = 12,164.61/x
  3. Step 3: Cross multiply
    21,035.94x = 31,553.65 × 12,164.61
  4. Step 4: Simplify right side
    21,035.94x = 383,837,979.86
  5. Step 5: Solve for x
    x = 383,837,979.86/21,035.94
  6. Step 6: Final answer
    x = 18,246.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.