Home / 28,309.49-39,067.46-15,563.84

Finding the Fourth Proportional to 28,309.49, 39,067.46 and 15,563.84

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Solution

The fourth proportional to 28,309.49, 39,067.46 and 15,563.84 is: 21,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.49 : 39,067.46 = 15,563.84 : x
  2. Step 2: Convert to fraction form
    28,309.49/39,067.46 = 15,563.84/x
  3. Step 3: Cross multiply
    28,309.49x = 39,067.46 × 15,563.84
  4. Step 4: Simplify right side
    28,309.49x = 608,039,423.49
  5. Step 5: Solve for x
    x = 608,039,423.49/28,309.49
  6. Step 6: Final answer
    x = 21,478.29

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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.