Home / 13,988.94-20,983.62-3,459

Finding the Fourth Proportional to 13,988.94, 20,983.62 and 3,459

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Solution

The fourth proportional to 13,988.94, 20,983.62 and 3,459 is: 5,188.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.94 : 20,983.62 = 3,459 : x
  2. Step 2: Convert to fraction form
    13,988.94/20,983.62 = 3,459/x
  3. Step 3: Cross multiply
    13,988.94x = 20,983.62 × 3,459
  4. Step 4: Simplify right side
    13,988.94x = 72,582,341.58
  5. Step 5: Solve for x
    x = 72,582,341.58/13,988.94
  6. Step 6: Final answer
    x = 5,188.55

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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.