Home / 25,279.20-37,918.80-20,358.45

Finding the Fourth Proportional to 25,279.20, 37,918.80 and 20,358.45

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Solution

The fourth proportional to 25,279.20, 37,918.80 and 20,358.45 is: 30,537.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,279.20 : 37,918.80 = 20,358.45 : x
  2. Step 2: Convert to fraction form
    25,279.20/37,918.80 = 20,358.45/x
  3. Step 3: Cross multiply
    25,279.20x = 37,918.80 × 20,358.45
  4. Step 4: Simplify right side
    25,279.20x = 771,967,993.86
  5. Step 5: Solve for x
    x = 771,967,993.86/25,279.20
  6. Step 6: Final answer
    x = 30,537.68

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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.