Home / 31,154.88-46,723.68-8,660.40

Finding the Fourth Proportional to 31,154.88, 46,723.68 and 8,660.40

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Solution

The fourth proportional to 31,154.88, 46,723.68 and 8,660.40 is: 12,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,154.88 : 46,723.68 = 8,660.40 : x
  2. Step 2: Convert to fraction form
    31,154.88/46,723.68 = 8,660.40/x
  3. Step 3: Cross multiply
    31,154.88x = 46,723.68 × 8,660.40
  4. Step 4: Simplify right side
    31,154.88x = 404,645,758.27
  5. Step 5: Solve for x
    x = 404,645,758.27/31,154.88
  6. Step 6: Final answer
    x = 12,988.20

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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.