Home / 36,891.12-50,909.88-20,980.80

Finding the Fourth Proportional to 36,891.12, 50,909.88 and 20,980.80

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Solution

The fourth proportional to 36,891.12, 50,909.88 and 20,980.80 is: 28,953.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,891.12 : 50,909.88 = 20,980.80 : x
  2. Step 2: Convert to fraction form
    36,891.12/50,909.88 = 20,980.80/x
  3. Step 3: Cross multiply
    36,891.12x = 50,909.88 × 20,980.80
  4. Step 4: Simplify right side
    36,891.12x = 1,068,130,010.30
  5. Step 5: Solve for x
    x = 1,068,130,010.30/36,891.12
  6. Step 6: Final answer
    x = 28,953.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.