Home / 20,766.49-31,158.87-10,903.48

Finding the Fourth Proportional to 20,766.49, 31,158.87 and 10,903.48

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Solution

The fourth proportional to 20,766.49, 31,158.87 and 10,903.48 is: 16,360.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.49 : 31,158.87 = 10,903.48 : x
  2. Step 2: Convert to fraction form
    20,766.49/31,158.87 = 10,903.48/x
  3. Step 3: Cross multiply
    20,766.49x = 31,158.87 × 10,903.48
  4. Step 4: Simplify right side
    20,766.49x = 339,740,115.87
  5. Step 5: Solve for x
    x = 339,740,115.87/20,766.49
  6. Step 6: Final answer
    x = 16,360.02

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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.