Home / 28,147.35-42,207.39-11,500.77

Finding the Fourth Proportional to 28,147.35, 42,207.39 and 11,500.77

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Solution

The fourth proportional to 28,147.35, 42,207.39 and 11,500.77 is: 17,245.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.35 : 42,207.39 = 11,500.77 : x
  2. Step 2: Convert to fraction form
    28,147.35/42,207.39 = 11,500.77/x
  3. Step 3: Cross multiply
    28,147.35x = 42,207.39 × 11,500.77
  4. Step 4: Simplify right side
    28,147.35x = 485,417,484.69
  5. Step 5: Solve for x
    x = 485,417,484.69/28,147.35
  6. Step 6: Final answer
    x = 17,245.58

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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.