Home / 21,104.58-31,657.03-11,758.82

Finding the Fourth Proportional to 21,104.58, 31,657.03 and 11,758.82

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Solution

The fourth proportional to 21,104.58, 31,657.03 and 11,758.82 is: 17,638.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.58 : 31,657.03 = 11,758.82 : x
  2. Step 2: Convert to fraction form
    21,104.58/31,657.03 = 11,758.82/x
  3. Step 3: Cross multiply
    21,104.58x = 31,657.03 × 11,758.82
  4. Step 4: Simplify right side
    21,104.58x = 372,249,317.50
  5. Step 5: Solve for x
    x = 372,249,317.50/21,104.58
  6. Step 6: Final answer
    x = 17,638.32

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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.