Home / 20,679.90-31,014.72-14,495.10

Finding the Fourth Proportional to 20,679.90, 31,014.72 and 14,495.10

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Solution

The fourth proportional to 20,679.90, 31,014.72 and 14,495.10 is: 21,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.90 : 31,014.72 = 14,495.10 : x
  2. Step 2: Convert to fraction form
    20,679.90/31,014.72 = 14,495.10/x
  3. Step 3: Cross multiply
    20,679.90x = 31,014.72 × 14,495.10
  4. Step 4: Simplify right side
    20,679.90x = 449,561,467.87
  5. Step 5: Solve for x
    x = 449,561,467.87/20,679.90
  6. Step 6: Final answer
    x = 21,739.05

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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.