Home / 31,720.42-47,567.67-10,939.06

Finding the Fourth Proportional to 31,720.42, 47,567.67 and 10,939.06

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Solution

The fourth proportional to 31,720.42, 47,567.67 and 10,939.06 is: 16,404.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.42 : 47,567.67 = 10,939.06 : x
  2. Step 2: Convert to fraction form
    31,720.42/47,567.67 = 10,939.06/x
  3. Step 3: Cross multiply
    31,720.42x = 47,567.67 × 10,939.06
  4. Step 4: Simplify right side
    31,720.42x = 520,345,596.19
  5. Step 5: Solve for x
    x = 520,345,596.19/31,720.42
  6. Step 6: Final answer
    x = 16,404.12

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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.