Home / 20,437.48-30,662.39-7,290.87

Finding the Fourth Proportional to 20,437.48, 30,662.39 and 7,290.87

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Solution

The fourth proportional to 20,437.48, 30,662.39 and 7,290.87 is: 10,938.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.48 : 30,662.39 = 7,290.87 : x
  2. Step 2: Convert to fraction form
    20,437.48/30,662.39 = 7,290.87/x
  3. Step 3: Cross multiply
    20,437.48x = 30,662.39 × 7,290.87
  4. Step 4: Simplify right side
    20,437.48x = 223,555,499.38
  5. Step 5: Solve for x
    x = 223,555,499.38/20,437.48
  6. Step 6: Final answer
    x = 10,938.51

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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.