Home / 20,941.42-28,899.75-11,510.59

Finding the Fourth Proportional to 20,941.42, 28,899.75 and 11,510.59

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Solution

The fourth proportional to 20,941.42, 28,899.75 and 11,510.59 is: 15,884.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.42 : 28,899.75 = 11,510.59 : x
  2. Step 2: Convert to fraction form
    20,941.42/28,899.75 = 11,510.59/x
  3. Step 3: Cross multiply
    20,941.42x = 28,899.75 × 11,510.59
  4. Step 4: Simplify right side
    20,941.42x = 332,653,173.35
  5. Step 5: Solve for x
    x = 332,653,173.35/20,941.42
  6. Step 6: Final answer
    x = 15,884.94

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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.