Home / 20,739.80-31,109.70-16,074.20

Finding the Fourth Proportional to 20,739.80, 31,109.70 and 16,074.20

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Solution

The fourth proportional to 20,739.80, 31,109.70 and 16,074.20 is: 24,111.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.80 : 31,109.70 = 16,074.20 : x
  2. Step 2: Convert to fraction form
    20,739.80/31,109.70 = 16,074.20/x
  3. Step 3: Cross multiply
    20,739.80x = 31,109.70 × 16,074.20
  4. Step 4: Simplify right side
    20,739.80x = 500,063,539.74
  5. Step 5: Solve for x
    x = 500,063,539.74/20,739.80
  6. Step 6: Final answer
    x = 24,111.30

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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.