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Finding the Fourth Proportional to 57,428.94, 86,147.50 and 15,308.80

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Solution

The fourth proportional to 57,428.94, 86,147.50 and 15,308.80 is: 22,964.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,428.94 : 86,147.50 = 15,308.80 : x
  2. Step 2: Convert to fraction form
    57,428.94/86,147.50 = 15,308.80/x
  3. Step 3: Cross multiply
    57,428.94x = 86,147.50 × 15,308.80
  4. Step 4: Simplify right side
    57,428.94x = 1,318,814,848
  5. Step 5: Solve for x
    x = 1,318,814,848/57,428.94
  6. Step 6: Final answer
    x = 22,964.29

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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.