Home / 13,310.84-19,966.44-6,390.20

Finding the Fourth Proportional to 13,310.84, 19,966.44 and 6,390.20

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Solution

The fourth proportional to 13,310.84, 19,966.44 and 6,390.20 is: 9,585.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.84 : 19,966.44 = 6,390.20 : x
  2. Step 2: Convert to fraction form
    13,310.84/19,966.44 = 6,390.20/x
  3. Step 3: Cross multiply
    13,310.84x = 19,966.44 × 6,390.20
  4. Step 4: Simplify right side
    13,310.84x = 127,589,544.89
  5. Step 5: Solve for x
    x = 127,589,544.89/13,310.84
  6. Step 6: Final answer
    x = 9,585.39

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1.5x scale

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.