Home / 31,919.34-47,900.88-11,142.84

Finding the Fourth Proportional to 31,919.34, 47,900.88 and 11,142.84

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Solution

The fourth proportional to 31,919.34, 47,900.88 and 11,142.84 is: 16,721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,919.34 : 47,900.88 = 11,142.84 : x
  2. Step 2: Convert to fraction form
    31,919.34/47,900.88 = 11,142.84/x
  3. Step 3: Cross multiply
    31,919.34x = 47,900.88 × 11,142.84
  4. Step 4: Simplify right side
    31,919.34x = 533,751,841.70
  5. Step 5: Solve for x
    x = 533,751,841.70/31,919.34
  6. Step 6: Final answer
    x = 16,721.89

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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.