Home / 26,686.75-40,028.69-13,538.78

Finding the Fourth Proportional to 26,686.75, 40,028.69 and 13,538.78

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Solution

The fourth proportional to 26,686.75, 40,028.69 and 13,538.78 is: 20,307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.75 : 40,028.69 = 13,538.78 : x
  2. Step 2: Convert to fraction form
    26,686.75/40,028.69 = 13,538.78/x
  3. Step 3: Cross multiply
    26,686.75x = 40,028.69 × 13,538.78
  4. Step 4: Simplify right side
    26,686.75x = 541,939,627.60
  5. Step 5: Solve for x
    x = 541,939,627.60/26,686.75
  6. Step 6: Final answer
    x = 20,307.44

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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.