Home / 21,935.54-32,905.61-7,145.61

Finding the Fourth Proportional to 21,935.54, 32,905.61 and 7,145.61

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Solution

The fourth proportional to 21,935.54, 32,905.61 and 7,145.61 is: 10,719.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.54 : 32,905.61 = 7,145.61 : x
  2. Step 2: Convert to fraction form
    21,935.54/32,905.61 = 7,145.61/x
  3. Step 3: Cross multiply
    21,935.54x = 32,905.61 × 7,145.61
  4. Step 4: Simplify right side
    21,935.54x = 235,130,655.87
  5. Step 5: Solve for x
    x = 235,130,655.87/21,935.54
  6. Step 6: Final answer
    x = 10,719.16

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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.