Home / 20,938.48-31,397.46-7,611.04

Finding the Fourth Proportional to 20,938.48, 31,397.46 and 7,611.04

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Solution

The fourth proportional to 20,938.48, 31,397.46 and 7,611.04 is: 11,412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.48 : 31,397.46 = 7,611.04 : x
  2. Step 2: Convert to fraction form
    20,938.48/31,397.46 = 7,611.04/x
  3. Step 3: Cross multiply
    20,938.48x = 31,397.46 × 7,611.04
  4. Step 4: Simplify right side
    20,938.48x = 238,967,323.96
  5. Step 5: Solve for x
    x = 238,967,323.96/20,938.48
  6. Step 6: Final answer
    x = 11,412.83

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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.