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Finding the Fourth Proportional to 21,810.54, 32,735.88 and 20,656.92

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Solution

The fourth proportional to 21,810.54, 32,735.88 and 20,656.92 is: 31,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,810.54 : 32,735.88 = 20,656.92 : x
  2. Step 2: Convert to fraction form
    21,810.54/32,735.88 = 20,656.92/x
  3. Step 3: Cross multiply
    21,810.54x = 32,735.88 × 20,656.92
  4. Step 4: Simplify right side
    21,810.54x = 676,222,454.29
  5. Step 5: Solve for x
    x = 676,222,454.29/21,810.54
  6. Step 6: Final answer
    x = 31,004.39

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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.