Home / 42,996.80-64,456.32-15,288.32

Finding the Fourth Proportional to 42,996.80, 64,456.32 and 15,288.32

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Solution

The fourth proportional to 42,996.80, 64,456.32 and 15,288.32 is: 22,918.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,996.80 : 64,456.32 = 15,288.32 : x
  2. Step 2: Convert to fraction form
    42,996.80/64,456.32 = 15,288.32/x
  3. Step 3: Cross multiply
    42,996.80x = 64,456.32 × 15,288.32
  4. Step 4: Simplify right side
    42,996.80x = 985,428,846.18
  5. Step 5: Solve for x
    x = 985,428,846.18/42,996.80
  6. Step 6: Final answer
    x = 22,918.66

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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.