Home / 28,870.64-39,832.77-16,768.79

Finding the Fourth Proportional to 28,870.64, 39,832.77 and 16,768.79

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Solution

The fourth proportional to 28,870.64, 39,832.77 and 16,768.79 is: 23,135.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.64 : 39,832.77 = 16,768.79 : x
  2. Step 2: Convert to fraction form
    28,870.64/39,832.77 = 16,768.79/x
  3. Step 3: Cross multiply
    28,870.64x = 39,832.77 × 16,768.79
  4. Step 4: Simplify right side
    28,870.64x = 667,947,156.08
  5. Step 5: Solve for x
    x = 667,947,156.08/28,870.64
  6. Step 6: Final answer
    x = 23,135.87

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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.