Home / 20,504.42-28,297.76-11,551.40

Finding the Fourth Proportional to 20,504.42, 28,297.76 and 11,551.40

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Solution

The fourth proportional to 20,504.42, 28,297.76 and 11,551.40 is: 15,941.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.42 : 28,297.76 = 11,551.40 : x
  2. Step 2: Convert to fraction form
    20,504.42/28,297.76 = 11,551.40/x
  3. Step 3: Cross multiply
    20,504.42x = 28,297.76 × 11,551.40
  4. Step 4: Simplify right side
    20,504.42x = 326,878,545.62
  5. Step 5: Solve for x
    x = 326,878,545.62/20,504.42
  6. Step 6: Final answer
    x = 15,941.86

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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.