Home / 21,722.83-29,982.60-14,156.08

Finding the Fourth Proportional to 21,722.83, 29,982.60 and 14,156.08

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Solution

The fourth proportional to 21,722.83, 29,982.60 and 14,156.08 is: 19,538.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.83 : 29,982.60 = 14,156.08 : x
  2. Step 2: Convert to fraction form
    21,722.83/29,982.60 = 14,156.08/x
  3. Step 3: Cross multiply
    21,722.83x = 29,982.60 × 14,156.08
  4. Step 4: Simplify right side
    21,722.83x = 424,436,084.21
  5. Step 5: Solve for x
    x = 424,436,084.21/21,722.83
  6. Step 6: Final answer
    x = 19,538.71

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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.