Home / 42,999.72-64,499.94-11,836.68

Finding the Fourth Proportional to 42,999.72, 64,499.94 and 11,836.68

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Solution

The fourth proportional to 42,999.72, 64,499.94 and 11,836.68 is: 17,755.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,999.72 : 64,499.94 = 11,836.68 : x
  2. Step 2: Convert to fraction form
    42,999.72/64,499.94 = 11,836.68/x
  3. Step 3: Cross multiply
    42,999.72x = 64,499.94 × 11,836.68
  4. Step 4: Simplify right side
    42,999.72x = 763,465,149.80
  5. Step 5: Solve for x
    x = 763,465,149.80/42,999.72
  6. Step 6: Final answer
    x = 17,755.12

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1.5x scale

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.