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Finding the Fourth Proportional to 21,602.73, 32,330.94 and 13,288.01

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Solution

The fourth proportional to 21,602.73, 32,330.94 and 13,288.01 is: 19,887.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.73 : 32,330.94 = 13,288.01 : x
  2. Step 2: Convert to fraction form
    21,602.73/32,330.94 = 13,288.01/x
  3. Step 3: Cross multiply
    21,602.73x = 32,330.94 × 13,288.01
  4. Step 4: Simplify right side
    21,602.73x = 429,613,854.03
  5. Step 5: Solve for x
    x = 429,613,854.03/21,602.73
  6. Step 6: Final answer
    x = 19,887.02

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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.