Home / 21,641.46-29,864.61-12,210.90

Finding the Fourth Proportional to 21,641.46, 29,864.61 and 12,210.90

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Solution

The fourth proportional to 21,641.46, 29,864.61 and 12,210.90 is: 16,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,641.46 : 29,864.61 = 12,210.90 : x
  2. Step 2: Convert to fraction form
    21,641.46/29,864.61 = 12,210.90/x
  3. Step 3: Cross multiply
    21,641.46x = 29,864.61 × 12,210.90
  4. Step 4: Simplify right side
    21,641.46x = 364,673,766.25
  5. Step 5: Solve for x
    x = 364,673,766.25/21,641.46
  6. Step 6: Final answer
    x = 16,850.70

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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.