Home / 20,515.26-30,748.59-9,412.68

Finding the Fourth Proportional to 20,515.26, 30,748.59 and 9,412.68

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Solution

The fourth proportional to 20,515.26, 30,748.59 and 9,412.68 is: 14,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.26 : 30,748.59 = 9,412.68 : x
  2. Step 2: Convert to fraction form
    20,515.26/30,748.59 = 9,412.68/x
  3. Step 3: Cross multiply
    20,515.26x = 30,748.59 × 9,412.68
  4. Step 4: Simplify right side
    20,515.26x = 289,426,638.12
  5. Step 5: Solve for x
    x = 289,426,638.12/20,515.26
  6. Step 6: Final answer
    x = 14,107.87

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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.