Home / 21,916.45-32,875.11-7,125.33

Finding the Fourth Proportional to 21,916.45, 32,875.11 and 7,125.33

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Solution

The fourth proportional to 21,916.45, 32,875.11 and 7,125.33 is: 10,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.45 : 32,875.11 = 7,125.33 : x
  2. Step 2: Convert to fraction form
    21,916.45/32,875.11 = 7,125.33/x
  3. Step 3: Cross multiply
    21,916.45x = 32,875.11 × 7,125.33
  4. Step 4: Simplify right side
    21,916.45x = 234,246,007.54
  5. Step 5: Solve for x
    x = 234,246,007.54/21,916.45
  6. Step 6: Final answer
    x = 10,688.14

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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.