Home / 20,297.79-28,012.23-11,345.94

Finding the Fourth Proportional to 20,297.79, 28,012.23 and 11,345.94

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Solution

The fourth proportional to 20,297.79, 28,012.23 and 11,345.94 is: 15,658.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.79 : 28,012.23 = 11,345.94 : x
  2. Step 2: Convert to fraction form
    20,297.79/28,012.23 = 11,345.94/x
  3. Step 3: Cross multiply
    20,297.79x = 28,012.23 × 11,345.94
  4. Step 4: Simplify right side
    20,297.79x = 317,825,080.85
  5. Step 5: Solve for x
    x = 317,825,080.85/20,297.79
  6. Step 6: Final answer
    x = 15,658.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.