Home / 20,941.90-28,899.60-11,510.26

Finding the Fourth Proportional to 20,941.90, 28,899.60 and 11,510.26

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Solution

The fourth proportional to 20,941.90, 28,899.60 and 11,510.26 is: 15,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.90 : 28,899.60 = 11,510.26 : x
  2. Step 2: Convert to fraction form
    20,941.90/28,899.60 = 11,510.26/x
  3. Step 3: Cross multiply
    20,941.90x = 28,899.60 × 11,510.26
  4. Step 4: Simplify right side
    20,941.90x = 332,641,909.90
  5. Step 5: Solve for x
    x = 332,641,909.90/20,941.90
  6. Step 6: Final answer
    x = 15,884.04

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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.