Home / 31,113.64-46,660.88-8,921.08

Finding the Fourth Proportional to 31,113.64, 46,660.88 and 8,921.08

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Solution

The fourth proportional to 31,113.64, 46,660.88 and 8,921.08 is: 13,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,113.64 : 46,660.88 = 8,921.08 : x
  2. Step 2: Convert to fraction form
    31,113.64/46,660.88 = 8,921.08/x
  3. Step 3: Cross multiply
    31,113.64x = 46,660.88 × 8,921.08
  4. Step 4: Simplify right side
    31,113.64x = 416,265,443.35
  5. Step 5: Solve for x
    x = 416,265,443.35/31,113.64
  6. Step 6: Final answer
    x = 13,378.87

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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.