Home / 20,673.10-31,008.98-8,986.34

Finding the Fourth Proportional to 20,673.10, 31,008.98 and 8,986.34

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Solution

The fourth proportional to 20,673.10, 31,008.98 and 8,986.34 is: 13,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.10 : 31,008.98 = 8,986.34 : x
  2. Step 2: Convert to fraction form
    20,673.10/31,008.98 = 8,986.34/x
  3. Step 3: Cross multiply
    20,673.10x = 31,008.98 × 8,986.34
  4. Step 4: Simplify right side
    20,673.10x = 278,657,237.33
  5. Step 5: Solve for x
    x = 278,657,237.33/20,673.10
  6. Step 6: Final answer
    x = 13,479.22

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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.