Home / 20,306.16-30,459.24-10,953.90

Finding the Fourth Proportional to 20,306.16, 30,459.24 and 10,953.90

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Solution

The fourth proportional to 20,306.16, 30,459.24 and 10,953.90 is: 16,430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.16 : 30,459.24 = 10,953.90 : x
  2. Step 2: Convert to fraction form
    20,306.16/30,459.24 = 10,953.90/x
  3. Step 3: Cross multiply
    20,306.16x = 30,459.24 × 10,953.90
  4. Step 4: Simplify right side
    20,306.16x = 333,647,469.04
  5. Step 5: Solve for x
    x = 333,647,469.04/20,306.16
  6. Step 6: Final answer
    x = 16,430.85

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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.