Home / 28,550.25-39,416.63-18,631.53

Finding the Fourth Proportional to 28,550.25, 39,416.63 and 18,631.53

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Solution

The fourth proportional to 28,550.25, 39,416.63 and 18,631.53 is: 25,722.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.25 : 39,416.63 = 18,631.53 : x
  2. Step 2: Convert to fraction form
    28,550.25/39,416.63 = 18,631.53/x
  3. Step 3: Cross multiply
    28,550.25x = 39,416.63 × 18,631.53
  4. Step 4: Simplify right side
    28,550.25x = 734,392,031.19
  5. Step 5: Solve for x
    x = 734,392,031.19/28,550.25
  6. Step 6: Final answer
    x = 25,722.79

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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.