Home / 27,986.21-38,635.28-21,598.45

Finding the Fourth Proportional to 27,986.21, 38,635.28 and 21,598.45

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Solution

The fourth proportional to 27,986.21, 38,635.28 and 21,598.45 is: 29,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.21 : 38,635.28 = 21,598.45 : x
  2. Step 2: Convert to fraction form
    27,986.21/38,635.28 = 21,598.45/x
  3. Step 3: Cross multiply
    27,986.21x = 38,635.28 × 21,598.45
  4. Step 4: Simplify right side
    27,986.21x = 834,462,039.73
  5. Step 5: Solve for x
    x = 834,462,039.73/27,986.21
  6. Step 6: Final answer
    x = 29,816.90

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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.