Home / 28,390.79-42,591.35-11,741.78

Finding the Fourth Proportional to 28,390.79, 42,591.35 and 11,741.78

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Solution

The fourth proportional to 28,390.79, 42,591.35 and 11,741.78 is: 17,614.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.79 : 42,591.35 = 11,741.78 : x
  2. Step 2: Convert to fraction form
    28,390.79/42,591.35 = 11,741.78/x
  3. Step 3: Cross multiply
    28,390.79x = 42,591.35 × 11,741.78
  4. Step 4: Simplify right side
    28,390.79x = 500,098,261.60
  5. Step 5: Solve for x
    x = 500,098,261.60/28,390.79
  6. Step 6: Final answer
    x = 17,614.81

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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.