Home / 20,158.40-30,237.60-10,827.20

Finding the Fourth Proportional to 20,158.40, 30,237.60 and 10,827.20

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Solution

The fourth proportional to 20,158.40, 30,237.60 and 10,827.20 is: 16,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.40 : 30,237.60 = 10,827.20 : x
  2. Step 2: Convert to fraction form
    20,158.40/30,237.60 = 10,827.20/x
  3. Step 3: Cross multiply
    20,158.40x = 30,237.60 × 10,827.20
  4. Step 4: Simplify right side
    20,158.40x = 327,388,542.72
  5. Step 5: Solve for x
    x = 327,388,542.72/20,158.40
  6. Step 6: Final answer
    x = 16,240.80

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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.