Home / 28,382.96-39,167.64-15,807.44

Finding the Fourth Proportional to 28,382.96, 39,167.64 and 15,807.44

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Solution

The fourth proportional to 28,382.96, 39,167.64 and 15,807.44 is: 21,813.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.96 : 39,167.64 = 15,807.44 : x
  2. Step 2: Convert to fraction form
    28,382.96/39,167.64 = 15,807.44/x
  3. Step 3: Cross multiply
    28,382.96x = 39,167.64 × 15,807.44
  4. Step 4: Simplify right side
    28,382.96x = 619,140,119.24
  5. Step 5: Solve for x
    x = 619,140,119.24/28,382.96
  6. Step 6: Final answer
    x = 21,813.80

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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.