Home / 12,931.92-19,376.82-9,040.68

Finding the Fourth Proportional to 12,931.92, 19,376.82 and 9,040.68

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Solution

The fourth proportional to 12,931.92, 19,376.82 and 9,040.68 is: 13,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.92 : 19,376.82 = 9,040.68 : x
  2. Step 2: Convert to fraction form
    12,931.92/19,376.82 = 9,040.68/x
  3. Step 3: Cross multiply
    12,931.92x = 19,376.82 × 9,040.68
  4. Step 4: Simplify right side
    12,931.92x = 175,179,629.04
  5. Step 5: Solve for x
    x = 175,179,629.04/12,931.92
  6. Step 6: Final answer
    x = 13,546.30

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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.