Home / 12,639.66-17,443.70-6,975.53

Finding the Fourth Proportional to 12,639.66, 17,443.70 and 6,975.53

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Solution

The fourth proportional to 12,639.66, 17,443.70 and 6,975.53 is: 9,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.66 : 17,443.70 = 6,975.53 : x
  2. Step 2: Convert to fraction form
    12,639.66/17,443.70 = 6,975.53/x
  3. Step 3: Cross multiply
    12,639.66x = 17,443.70 × 6,975.53
  4. Step 4: Simplify right side
    12,639.66x = 121,679,052.66
  5. Step 5: Solve for x
    x = 121,679,052.66/12,639.66
  6. Step 6: Final answer
    x = 9,626.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.