Home / 28,382.76-39,167.82-15,807.60

Finding the Fourth Proportional to 28,382.76, 39,167.82 and 15,807.60

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Solution

The fourth proportional to 28,382.76, 39,167.82 and 15,807.60 is: 21,814.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.76 : 39,167.82 = 15,807.60 : x
  2. Step 2: Convert to fraction form
    28,382.76/39,167.82 = 15,807.60/x
  3. Step 3: Cross multiply
    28,382.76x = 39,167.82 × 15,807.60
  4. Step 4: Simplify right side
    28,382.76x = 619,149,231.43
  5. Step 5: Solve for x
    x = 619,149,231.43/28,382.76
  6. Step 6: Final answer
    x = 21,814.27

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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.