Home / 31,829.40-47,729.70-14,290.20

Finding the Fourth Proportional to 31,829.40, 47,729.70 and 14,290.20

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Solution

The fourth proportional to 31,829.40, 47,729.70 and 14,290.20 is: 21,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,829.40 : 47,729.70 = 14,290.20 : x
  2. Step 2: Convert to fraction form
    31,829.40/47,729.70 = 14,290.20/x
  3. Step 3: Cross multiply
    31,829.40x = 47,729.70 × 14,290.20
  4. Step 4: Simplify right side
    31,829.40x = 682,066,958.94
  5. Step 5: Solve for x
    x = 682,066,958.94/31,829.40
  6. Step 6: Final answer
    x = 21,428.83

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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.