Home / 28,550.13-39,416.45-18,631.41

Finding the Fourth Proportional to 28,550.13, 39,416.45 and 18,631.41

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Solution

The fourth proportional to 28,550.13, 39,416.45 and 18,631.41 is: 25,722.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.13 : 39,416.45 = 18,631.41 : x
  2. Step 2: Convert to fraction form
    28,550.13/39,416.45 = 18,631.41/x
  3. Step 3: Cross multiply
    28,550.13x = 39,416.45 × 18,631.41
  4. Step 4: Simplify right side
    28,550.13x = 734,384,040.69
  5. Step 5: Solve for x
    x = 734,384,040.69/28,550.13
  6. Step 6: Final answer
    x = 25,722.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.