Home / 57,428.37-86,142.57-17,988.56

Finding the Fourth Proportional to 57,428.37, 86,142.57 and 17,988.56

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Solution

The fourth proportional to 57,428.37, 86,142.57 and 17,988.56 is: 26,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,428.37 : 86,142.57 = 17,988.56 : x
  2. Step 2: Convert to fraction form
    57,428.37/86,142.57 = 17,988.56/x
  3. Step 3: Cross multiply
    57,428.37x = 86,142.57 × 17,988.56
  4. Step 4: Simplify right side
    57,428.37x = 1,549,580,936.90
  5. Step 5: Solve for x
    x = 1,549,580,936.90/57,428.37
  6. Step 6: Final answer
    x = 26,982.85

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Similar ratio
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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.