Home / 28,049.15-42,081.69-11,421.10

Finding the Fourth Proportional to 28,049.15, 42,081.69 and 11,421.10

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Solution

The fourth proportional to 28,049.15, 42,081.69 and 11,421.10 is: 17,134.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,049.15 : 42,081.69 = 11,421.10 : x
  2. Step 2: Convert to fraction form
    28,049.15/42,081.69 = 11,421.10/x
  3. Step 3: Cross multiply
    28,049.15x = 42,081.69 × 11,421.10
  4. Step 4: Simplify right side
    28,049.15x = 480,619,285.09
  5. Step 5: Solve for x
    x = 480,619,285.09/28,049.15
  6. Step 6: Final answer
    x = 17,134.90

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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.