Home / 13,140.84-19,694.18-6,885.02

Finding the Fourth Proportional to 13,140.84, 19,694.18 and 6,885.02

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Solution

The fourth proportional to 13,140.84, 19,694.18 and 6,885.02 is: 10,318.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.84 : 19,694.18 = 6,885.02 : x
  2. Step 2: Convert to fraction form
    13,140.84/19,694.18 = 6,885.02/x
  3. Step 3: Cross multiply
    13,140.84x = 19,694.18 × 6,885.02
  4. Step 4: Simplify right side
    13,140.84x = 135,594,823.18
  5. Step 5: Solve for x
    x = 135,594,823.18/13,140.84
  6. Step 6: Final answer
    x = 10,318.58

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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.