Home / 28,507.55-42,757.77-11,865.39

Finding the Fourth Proportional to 28,507.55, 42,757.77 and 11,865.39

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Solution

The fourth proportional to 28,507.55, 42,757.77 and 11,865.39 is: 17,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.55 : 42,757.77 = 11,865.39 : x
  2. Step 2: Convert to fraction form
    28,507.55/42,757.77 = 11,865.39/x
  3. Step 3: Cross multiply
    28,507.55x = 42,757.77 × 11,865.39
  4. Step 4: Simplify right side
    28,507.55x = 507,337,500.73
  5. Step 5: Solve for x
    x = 507,337,500.73/28,507.55
  6. Step 6: Final answer
    x = 17,796.60

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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.