Home / 28,513.64-42,777.84-8,791.76

Finding the Fourth Proportional to 28,513.64, 42,777.84 and 8,791.76

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Solution

The fourth proportional to 28,513.64, 42,777.84 and 8,791.76 is: 13,189.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.64 : 42,777.84 = 8,791.76 : x
  2. Step 2: Convert to fraction form
    28,513.64/42,777.84 = 8,791.76/x
  3. Step 3: Cross multiply
    28,513.64x = 42,777.84 × 8,791.76
  4. Step 4: Simplify right side
    28,513.64x = 376,092,502.60
  5. Step 5: Solve for x
    x = 376,092,502.60/28,513.64
  6. Step 6: Final answer
    x = 13,189.92

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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.