Home / 12,639.47-17,443.46-6,975.35

Finding the Fourth Proportional to 12,639.47, 17,443.46 and 6,975.35

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Solution

The fourth proportional to 12,639.47, 17,443.46 and 6,975.35 is: 9,626.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.47 : 17,443.46 = 6,975.35 : x
  2. Step 2: Convert to fraction form
    12,639.47/17,443.46 = 6,975.35/x
  3. Step 3: Cross multiply
    12,639.47x = 17,443.46 × 6,975.35
  4. Step 4: Simplify right side
    12,639.47x = 121,674,116.62
  5. Step 5: Solve for x
    x = 121,674,116.62/12,639.47
  6. Step 6: Final answer
    x = 9,626.52

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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.