Home / 28,688.88-43,016.77-11,138.21

Finding the Fourth Proportional to 28,688.88, 43,016.77 and 11,138.21

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Solution

The fourth proportional to 28,688.88, 43,016.77 and 11,138.21 is: 16,700.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.88 : 43,016.77 = 11,138.21 : x
  2. Step 2: Convert to fraction form
    28,688.88/43,016.77 = 11,138.21/x
  3. Step 3: Cross multiply
    28,688.88x = 43,016.77 × 11,138.21
  4. Step 4: Simplify right side
    28,688.88x = 479,129,574.85
  5. Step 5: Solve for x
    x = 479,129,574.85/28,688.88
  6. Step 6: Final answer
    x = 16,700.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.