Home / 20,925.72-31,357.14-18,950.04

Finding the Fourth Proportional to 20,925.72, 31,357.14 and 18,950.04

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Solution

The fourth proportional to 20,925.72, 31,357.14 and 18,950.04 is: 28,396.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.72 : 31,357.14 = 18,950.04 : x
  2. Step 2: Convert to fraction form
    20,925.72/31,357.14 = 18,950.04/x
  3. Step 3: Cross multiply
    20,925.72x = 31,357.14 × 18,950.04
  4. Step 4: Simplify right side
    20,925.72x = 594,219,057.29
  5. Step 5: Solve for x
    x = 594,219,057.29/20,925.72
  6. Step 6: Final answer
    x = 28,396.59

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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.