Home / 21,380.34-29,473.83-14,987.01

Finding the Fourth Proportional to 21,380.34, 29,473.83 and 14,987.01

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Solution

The fourth proportional to 21,380.34, 29,473.83 and 14,987.01 is: 20,660.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.34 : 29,473.83 = 14,987.01 : x
  2. Step 2: Convert to fraction form
    21,380.34/29,473.83 = 14,987.01/x
  3. Step 3: Cross multiply
    21,380.34x = 29,473.83 × 14,987.01
  4. Step 4: Simplify right side
    21,380.34x = 441,724,584.95
  5. Step 5: Solve for x
    x = 441,724,584.95/21,380.34
  6. Step 6: Final answer
    x = 20,660.32

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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.