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Finding the Fourth Proportional to 21,765.78, 32,602.59 and 18,059.22

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Solution

The fourth proportional to 21,765.78, 32,602.59 and 18,059.22 is: 27,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.78 : 32,602.59 = 18,059.22 : x
  2. Step 2: Convert to fraction form
    21,765.78/32,602.59 = 18,059.22/x
  3. Step 3: Cross multiply
    21,765.78x = 32,602.59 × 18,059.22
  4. Step 4: Simplify right side
    21,765.78x = 588,777,345.38
  5. Step 5: Solve for x
    x = 588,777,345.38/21,765.78
  6. Step 6: Final answer
    x = 27,050.60

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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.