Home / 42,990.75-64,489.77-11,826

Finding the Fourth Proportional to 42,990.75, 64,489.77 and 11,826

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Solution

The fourth proportional to 42,990.75, 64,489.77 and 11,826 is: 17,740.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,990.75 : 64,489.77 = 11,826 : x
  2. Step 2: Convert to fraction form
    42,990.75/64,489.77 = 11,826/x
  3. Step 3: Cross multiply
    42,990.75x = 64,489.77 × 11,826
  4. Step 4: Simplify right side
    42,990.75x = 762,656,020.02
  5. Step 5: Solve for x
    x = 762,656,020.02/42,990.75
  6. Step 6: Final answer
    x = 17,740.00

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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.