Home / 21,072.46-31,609.90-7,924.94

Finding the Fourth Proportional to 21,072.46, 31,609.90 and 7,924.94

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Solution

The fourth proportional to 21,072.46, 31,609.90 and 7,924.94 is: 11,887.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.46 : 31,609.90 = 7,924.94 : x
  2. Step 2: Convert to fraction form
    21,072.46/31,609.90 = 7,924.94/x
  3. Step 3: Cross multiply
    21,072.46x = 31,609.90 × 7,924.94
  4. Step 4: Simplify right side
    21,072.46x = 250,506,659.74
  5. Step 5: Solve for x
    x = 250,506,659.74/21,072.46
  6. Step 6: Final answer
    x = 11,887.87

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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.