Home / 21,428.61-32,143.28-6,637.52

Finding the Fourth Proportional to 21,428.61, 32,143.28 and 6,637.52

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Solution

The fourth proportional to 21,428.61, 32,143.28 and 6,637.52 is: 9,956.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.61 : 32,143.28 = 6,637.52 : x
  2. Step 2: Convert to fraction form
    21,428.61/32,143.28 = 6,637.52/x
  3. Step 3: Cross multiply
    21,428.61x = 32,143.28 × 6,637.52
  4. Step 4: Simplify right side
    21,428.61x = 213,351,469.96
  5. Step 5: Solve for x
    x = 213,351,469.96/21,428.61
  6. Step 6: Final answer
    x = 9,956.38

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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.