Home / 21,803.14-30,084.72-12,849.43

Finding the Fourth Proportional to 21,803.14, 30,084.72 and 12,849.43

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Solution

The fourth proportional to 21,803.14, 30,084.72 and 12,849.43 is: 17,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.14 : 30,084.72 = 12,849.43 : x
  2. Step 2: Convert to fraction form
    21,803.14/30,084.72 = 12,849.43/x
  3. Step 3: Cross multiply
    21,803.14x = 30,084.72 × 12,849.43
  4. Step 4: Simplify right side
    21,803.14x = 386,571,503.71
  5. Step 5: Solve for x
    x = 386,571,503.71/21,803.14
  6. Step 6: Final answer
    x = 17,730.08

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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.