Home / 21,800.92-30,084.98-12,848.80

Finding the Fourth Proportional to 21,800.92, 30,084.98 and 12,848.80

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Solution

The fourth proportional to 21,800.92, 30,084.98 and 12,848.80 is: 17,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,800.92 : 30,084.98 = 12,848.80 : x
  2. Step 2: Convert to fraction form
    21,800.92/30,084.98 = 12,848.80/x
  3. Step 3: Cross multiply
    21,800.92x = 30,084.98 × 12,848.80
  4. Step 4: Simplify right side
    21,800.92x = 386,555,891.02
  5. Step 5: Solve for x
    x = 386,555,891.02/21,800.92
  6. Step 6: Final answer
    x = 17,731.17

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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.