Home / 21,428.14-32,143.70-6,635.10

Finding the Fourth Proportional to 21,428.14, 32,143.70 and 6,635.10

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Solution

The fourth proportional to 21,428.14, 32,143.70 and 6,635.10 is: 9,953.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.14 : 32,143.70 = 6,635.10 : x
  2. Step 2: Convert to fraction form
    21,428.14/32,143.70 = 6,635.10/x
  3. Step 3: Cross multiply
    21,428.14x = 32,143.70 × 6,635.10
  4. Step 4: Simplify right side
    21,428.14x = 213,276,663.87
  5. Step 5: Solve for x
    x = 213,276,663.87/21,428.14
  6. Step 6: Final answer
    x = 9,953.11

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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.