Home / 21,102.84-31,654.62-17,390.52

Finding the Fourth Proportional to 21,102.84, 31,654.62 and 17,390.52

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Solution

The fourth proportional to 21,102.84, 31,654.62 and 17,390.52 is: 26,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.84 : 31,654.62 = 17,390.52 : x
  2. Step 2: Convert to fraction form
    21,102.84/31,654.62 = 17,390.52/x
  3. Step 3: Cross multiply
    21,102.84x = 31,654.62 × 17,390.52
  4. Step 4: Simplify right side
    21,102.84x = 550,490,302.20
  5. Step 5: Solve for x
    x = 550,490,302.20/21,102.84
  6. Step 6: Final answer
    x = 26,086.08

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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.