Home / 20,827.76-31,239.60-11,343.14

Finding the Fourth Proportional to 20,827.76, 31,239.60 and 11,343.14

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Solution

The fourth proportional to 20,827.76, 31,239.60 and 11,343.14 is: 17,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.76 : 31,239.60 = 11,343.14 : x
  2. Step 2: Convert to fraction form
    20,827.76/31,239.60 = 11,343.14/x
  3. Step 3: Cross multiply
    20,827.76x = 31,239.60 × 11,343.14
  4. Step 4: Simplify right side
    20,827.76x = 354,355,000.15
  5. Step 5: Solve for x
    x = 354,355,000.15/20,827.76
  6. Step 6: Final answer
    x = 17,013.60

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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.