Home / 28,939.46-43,379.38-13,155.48

Finding the Fourth Proportional to 28,939.46, 43,379.38 and 13,155.48

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Solution

The fourth proportional to 28,939.46, 43,379.38 and 13,155.48 is: 19,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.46 : 43,379.38 = 13,155.48 : x
  2. Step 2: Convert to fraction form
    28,939.46/43,379.38 = 13,155.48/x
  3. Step 3: Cross multiply
    28,939.46x = 43,379.38 × 13,155.48
  4. Step 4: Simplify right side
    28,939.46x = 570,676,566.00
  5. Step 5: Solve for x
    x = 570,676,566.00/28,939.46
  6. Step 6: Final answer
    x = 19,719.67

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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.