Home / 27,985.41-38,634.12-21,597.64

Finding the Fourth Proportional to 27,985.41, 38,634.12 and 21,597.64

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Solution

The fourth proportional to 27,985.41, 38,634.12 and 21,597.64 is: 29,815.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.41 : 38,634.12 = 21,597.64 : x
  2. Step 2: Convert to fraction form
    27,985.41/38,634.12 = 21,597.64/x
  3. Step 3: Cross multiply
    27,985.41x = 38,634.12 × 21,597.64
  4. Step 4: Simplify right side
    27,985.41x = 834,405,718.89
  5. Step 5: Solve for x
    x = 834,405,718.89/27,985.41
  6. Step 6: Final answer
    x = 29,815.74

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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.