Home / 13,084.40-19,604.28-8,639.12

Finding the Fourth Proportional to 13,084.40, 19,604.28 and 8,639.12

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Solution

The fourth proportional to 13,084.40, 19,604.28 and 8,639.12 is: 12,943.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084.40 : 19,604.28 = 8,639.12 : x
  2. Step 2: Convert to fraction form
    13,084.40/19,604.28 = 8,639.12/x
  3. Step 3: Cross multiply
    13,084.40x = 19,604.28 × 8,639.12
  4. Step 4: Simplify right side
    13,084.40x = 169,363,727.43
  5. Step 5: Solve for x
    x = 169,363,727.43/13,084.40
  6. Step 6: Final answer
    x = 12,943.94

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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.