Home / 21,627.54-29,801.72-15,953.30

Finding the Fourth Proportional to 21,627.54, 29,801.72 and 15,953.30

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Solution

The fourth proportional to 21,627.54, 29,801.72 and 15,953.30 is: 21,982.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.54 : 29,801.72 = 15,953.30 : x
  2. Step 2: Convert to fraction form
    21,627.54/29,801.72 = 15,953.30/x
  3. Step 3: Cross multiply
    21,627.54x = 29,801.72 × 15,953.30
  4. Step 4: Simplify right side
    21,627.54x = 475,435,779.68
  5. Step 5: Solve for x
    x = 475,435,779.68/21,627.54
  6. Step 6: Final answer
    x = 21,982.89

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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.