Home / 20,941.89-31,423.09-9,849.70

Finding the Fourth Proportional to 20,941.89, 31,423.09 and 9,849.70

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Solution

The fourth proportional to 20,941.89, 31,423.09 and 9,849.70 is: 14,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.89 : 31,423.09 = 9,849.70 : x
  2. Step 2: Convert to fraction form
    20,941.89/31,423.09 = 9,849.70/x
  3. Step 3: Cross multiply
    20,941.89x = 31,423.09 × 9,849.70
  4. Step 4: Simplify right side
    20,941.89x = 309,508,042.70
  5. Step 5: Solve for x
    x = 309,508,042.70/20,941.89
  6. Step 6: Final answer
    x = 14,779.37

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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.