Home / 21,821.52-32,670.57-13,904.58

Finding the Fourth Proportional to 21,821.52, 32,670.57 and 13,904.58

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Solution

The fourth proportional to 21,821.52, 32,670.57 and 13,904.58 is: 20,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,821.52 : 32,670.57 = 13,904.58 : x
  2. Step 2: Convert to fraction form
    21,821.52/32,670.57 = 13,904.58/x
  3. Step 3: Cross multiply
    21,821.52x = 32,670.57 × 13,904.58
  4. Step 4: Simplify right side
    21,821.52x = 454,270,554.21
  5. Step 5: Solve for x
    x = 454,270,554.21/21,821.52
  6. Step 6: Final answer
    x = 20,817.55

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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.