Home / 28,282.57-39,039.10-20,347.88

Finding the Fourth Proportional to 28,282.57, 39,039.10 and 20,347.88

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Solution

The fourth proportional to 28,282.57, 39,039.10 and 20,347.88 is: 28,086.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,282.57 : 39,039.10 = 20,347.88 : x
  2. Step 2: Convert to fraction form
    28,282.57/39,039.10 = 20,347.88/x
  3. Step 3: Cross multiply
    28,282.57x = 39,039.10 × 20,347.88
  4. Step 4: Simplify right side
    28,282.57x = 794,362,676.04
  5. Step 5: Solve for x
    x = 794,362,676.04/28,282.57
  6. Step 6: Final answer
    x = 28,086.65

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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.