Home / 56,189.40-84,251.26-21,131.80

Finding the Fourth Proportional to 56,189.40, 84,251.26 and 21,131.80

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Solution

The fourth proportional to 56,189.40, 84,251.26 and 21,131.80 is: 31,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,189.40 : 84,251.26 = 21,131.80 : x
  2. Step 2: Convert to fraction form
    56,189.40/84,251.26 = 21,131.80/x
  3. Step 3: Cross multiply
    56,189.40x = 84,251.26 × 21,131.80
  4. Step 4: Simplify right side
    56,189.40x = 1,780,380,776.07
  5. Step 5: Solve for x
    x = 1,780,380,776.07/56,189.40
  6. Step 6: Final answer
    x = 31,685.35

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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.