Home / 12,639.10-18,960.89-4,317.17

Finding the Fourth Proportional to 12,639.10, 18,960.89 and 4,317.17

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Solution

The fourth proportional to 12,639.10, 18,960.89 and 4,317.17 is: 6,476.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.10 : 18,960.89 = 4,317.17 : x
  2. Step 2: Convert to fraction form
    12,639.10/18,960.89 = 4,317.17/x
  3. Step 3: Cross multiply
    12,639.10x = 18,960.89 × 4,317.17
  4. Step 4: Simplify right side
    12,639.10x = 81,857,385.48
  5. Step 5: Solve for x
    x = 81,857,385.48/12,639.10
  6. Step 6: Final answer
    x = 6,476.52

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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.