Home / 31,107.12-46,666.88-8,920.68

Finding the Fourth Proportional to 31,107.12, 46,666.88 and 8,920.68

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Solution

The fourth proportional to 31,107.12, 46,666.88 and 8,920.68 is: 13,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,107.12 : 46,666.88 = 8,920.68 : x
  2. Step 2: Convert to fraction form
    31,107.12/46,666.88 = 8,920.68/x
  3. Step 3: Cross multiply
    31,107.12x = 46,666.88 × 8,920.68
  4. Step 4: Simplify right side
    31,107.12x = 416,300,303.08
  5. Step 5: Solve for x
    x = 416,300,303.08/31,107.12
  6. Step 6: Final answer
    x = 13,382.80

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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.