Home / 17,969.28-26,913.80-13,778.42

Finding the Fourth Proportional to 17,969.28, 26,913.80 and 13,778.42

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Solution

The fourth proportional to 17,969.28, 26,913.80 and 13,778.42 is: 20,636.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,969.28 : 26,913.80 = 13,778.42 : x
  2. Step 2: Convert to fraction form
    17,969.28/26,913.80 = 13,778.42/x
  3. Step 3: Cross multiply
    17,969.28x = 26,913.80 × 13,778.42
  4. Step 4: Simplify right side
    17,969.28x = 370,829,640.20
  5. Step 5: Solve for x
    x = 370,829,640.20/17,969.28
  6. Step 6: Final answer
    x = 20,636.87

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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.