Home / 31,178.86-46,763.62-10,120.68

Finding the Fourth Proportional to 31,178.86, 46,763.62 and 10,120.68

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Solution

The fourth proportional to 31,178.86, 46,763.62 and 10,120.68 is: 15,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,178.86 : 46,763.62 = 10,120.68 : x
  2. Step 2: Convert to fraction form
    31,178.86/46,763.62 = 10,120.68/x
  3. Step 3: Cross multiply
    31,178.86x = 46,763.62 × 10,120.68
  4. Step 4: Simplify right side
    31,178.86x = 473,279,633.66
  5. Step 5: Solve for x
    x = 473,279,633.66/31,178.86
  6. Step 6: Final answer
    x = 15,179.50

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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.