Home / 31,310.40-46,970.16-9,120.96

Finding the Fourth Proportional to 31,310.40, 46,970.16 and 9,120.96

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Solution

The fourth proportional to 31,310.40, 46,970.16 and 9,120.96 is: 13,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,310.40 : 46,970.16 = 9,120.96 : x
  2. Step 2: Convert to fraction form
    31,310.40/46,970.16 = 9,120.96/x
  3. Step 3: Cross multiply
    31,310.40x = 46,970.16 × 9,120.96
  4. Step 4: Simplify right side
    31,310.40x = 428,412,950.55
  5. Step 5: Solve for x
    x = 428,412,950.55/31,310.40
  6. Step 6: Final answer
    x = 13,682.77

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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.