Home / 20,426.09-30,641.75-7,279.79

Finding the Fourth Proportional to 20,426.09, 30,641.75 and 7,279.79

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Solution

The fourth proportional to 20,426.09, 30,641.75 and 7,279.79 is: 10,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.09 : 30,641.75 = 7,279.79 : x
  2. Step 2: Convert to fraction form
    20,426.09/30,641.75 = 7,279.79/x
  3. Step 3: Cross multiply
    20,426.09x = 30,641.75 × 7,279.79
  4. Step 4: Simplify right side
    20,426.09x = 223,065,505.23
  5. Step 5: Solve for x
    x = 223,065,505.23/20,426.09
  6. Step 6: Final answer
    x = 10,920.62

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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.