Home / 21,071.58-31,597.84-11,208.75

Finding the Fourth Proportional to 21,071.58, 31,597.84 and 11,208.75

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Solution

The fourth proportional to 21,071.58, 31,597.84 and 11,208.75 is: 16,808.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.58 : 31,597.84 = 11,208.75 : x
  2. Step 2: Convert to fraction form
    21,071.58/31,597.84 = 11,208.75/x
  3. Step 3: Cross multiply
    21,071.58x = 31,597.84 × 11,208.75
  4. Step 4: Simplify right side
    21,071.58x = 354,172,289.10
  5. Step 5: Solve for x
    x = 354,172,289.10/21,071.58
  6. Step 6: Final answer
    x = 16,808.06

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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.