Home / 21,512.15-29,698.92-13,965.18

Finding the Fourth Proportional to 21,512.15, 29,698.92 and 13,965.18

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Solution

The fourth proportional to 21,512.15, 29,698.92 and 13,965.18 is: 19,279.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.15 : 29,698.92 = 13,965.18 : x
  2. Step 2: Convert to fraction form
    21,512.15/29,698.92 = 13,965.18/x
  3. Step 3: Cross multiply
    21,512.15x = 29,698.92 × 13,965.18
  4. Step 4: Simplify right side
    21,512.15x = 414,750,652.23
  5. Step 5: Solve for x
    x = 414,750,652.23/21,512.15
  6. Step 6: Final answer
    x = 19,279.83

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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.