Home / 28,660.50-42,996.87-11,130.30

Finding the Fourth Proportional to 28,660.50, 42,996.87 and 11,130.30

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Solution

The fourth proportional to 28,660.50, 42,996.87 and 11,130.30 is: 16,697.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.50 : 42,996.87 = 11,130.30 : x
  2. Step 2: Convert to fraction form
    28,660.50/42,996.87 = 11,130.30/x
  3. Step 3: Cross multiply
    28,660.50x = 42,996.87 × 11,130.30
  4. Step 4: Simplify right side
    28,660.50x = 478,568,062.16
  5. Step 5: Solve for x
    x = 478,568,062.16/28,660.50
  6. Step 6: Final answer
    x = 16,697.83

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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.