Home / 20,950.30-31,415.53-7,613.99

Finding the Fourth Proportional to 20,950.30, 31,415.53 and 7,613.99

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Solution

The fourth proportional to 20,950.30, 31,415.53 and 7,613.99 is: 11,417.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.30 : 31,415.53 = 7,613.99 : x
  2. Step 2: Convert to fraction form
    20,950.30/31,415.53 = 7,613.99/x
  3. Step 3: Cross multiply
    20,950.30x = 31,415.53 × 7,613.99
  4. Step 4: Simplify right side
    20,950.30x = 239,197,531.26
  5. Step 5: Solve for x
    x = 239,197,531.26/20,950.30
  6. Step 6: Final answer
    x = 11,417.38

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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.