Home / 28,407.38-39,195.36-18,333.68

Finding the Fourth Proportional to 28,407.38, 39,195.36 and 18,333.68

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Solution

The fourth proportional to 28,407.38, 39,195.36 and 18,333.68 is: 25,296.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.38 : 39,195.36 = 18,333.68 : x
  2. Step 2: Convert to fraction form
    28,407.38/39,195.36 = 18,333.68/x
  3. Step 3: Cross multiply
    28,407.38x = 39,195.36 × 18,333.68
  4. Step 4: Simplify right side
    28,407.38x = 718,594,991.75
  5. Step 5: Solve for x
    x = 718,594,991.75/28,407.38
  6. Step 6: Final answer
    x = 25,296.07

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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.