Home / 31,416.42-47,128.06-13,634.85

Finding the Fourth Proportional to 31,416.42, 47,128.06 and 13,634.85

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Solution

The fourth proportional to 31,416.42, 47,128.06 and 13,634.85 is: 20,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,416.42 : 47,128.06 = 13,634.85 : x
  2. Step 2: Convert to fraction form
    31,416.42/47,128.06 = 13,634.85/x
  3. Step 3: Cross multiply
    31,416.42x = 47,128.06 × 13,634.85
  4. Step 4: Simplify right side
    31,416.42x = 642,583,994.80
  5. Step 5: Solve for x
    x = 642,583,994.80/31,416.42
  6. Step 6: Final answer
    x = 20,453.77

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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.