Home / 20,832.39-31,248.79-5,250.02

Finding the Fourth Proportional to 20,832.39, 31,248.79 and 5,250.02

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Solution

The fourth proportional to 20,832.39, 31,248.79 and 5,250.02 is: 7,875.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.39 : 31,248.79 = 5,250.02 : x
  2. Step 2: Convert to fraction form
    20,832.39/31,248.79 = 5,250.02/x
  3. Step 3: Cross multiply
    20,832.39x = 31,248.79 × 5,250.02
  4. Step 4: Simplify right side
    20,832.39x = 164,056,603.11
  5. Step 5: Solve for x
    x = 164,056,603.11/20,832.39
  6. Step 6: Final answer
    x = 7,875.07

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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.