Home / 28,713.60-39,621.96-16,138.08

Finding the Fourth Proportional to 28,713.60, 39,621.96 and 16,138.08

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Solution

The fourth proportional to 28,713.60, 39,621.96 and 16,138.08 is: 22,268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.60 : 39,621.96 = 16,138.08 : x
  2. Step 2: Convert to fraction form
    28,713.60/39,621.96 = 16,138.08/x
  3. Step 3: Cross multiply
    28,713.60x = 39,621.96 × 16,138.08
  4. Step 4: Simplify right side
    28,713.60x = 639,422,360.24
  5. Step 5: Solve for x
    x = 639,422,360.24/28,713.60
  6. Step 6: Final answer
    x = 22,268.97

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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.