Home / 20,950.79-31,398.30-15,377.99

Finding the Fourth Proportional to 20,950.79, 31,398.30 and 15,377.99

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Solution

The fourth proportional to 20,950.79, 31,398.30 and 15,377.99 is: 23,046.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.79 : 31,398.30 = 15,377.99 : x
  2. Step 2: Convert to fraction form
    20,950.79/31,398.30 = 15,377.99/x
  3. Step 3: Cross multiply
    20,950.79x = 31,398.30 × 15,377.99
  4. Step 4: Simplify right side
    20,950.79x = 482,842,586.43
  5. Step 5: Solve for x
    x = 482,842,586.43/20,950.79
  6. Step 6: Final answer
    x = 23,046.52

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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.