Home / 20,871.48-31,312.70-6,080.52

Finding the Fourth Proportional to 20,871.48, 31,312.70 and 6,080.52

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Solution

The fourth proportional to 20,871.48, 31,312.70 and 6,080.52 is: 9,122.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871.48 : 31,312.70 = 6,080.52 : x
  2. Step 2: Convert to fraction form
    20,871.48/31,312.70 = 6,080.52/x
  3. Step 3: Cross multiply
    20,871.48x = 31,312.70 × 6,080.52
  4. Step 4: Simplify right side
    20,871.48x = 190,397,498.60
  5. Step 5: Solve for x
    x = 190,397,498.60/20,871.48
  6. Step 6: Final answer
    x = 9,122.38

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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.