Home / 43,145.48-64,721.82-11,980.82

Finding the Fourth Proportional to 43,145.48, 64,721.82 and 11,980.82

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Solution

The fourth proportional to 43,145.48, 64,721.82 and 11,980.82 is: 17,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,145.48 : 64,721.82 = 11,980.82 : x
  2. Step 2: Convert to fraction form
    43,145.48/64,721.82 = 11,980.82/x
  3. Step 3: Cross multiply
    43,145.48x = 64,721.82 × 11,980.82
  4. Step 4: Simplify right side
    43,145.48x = 775,420,475.49
  5. Step 5: Solve for x
    x = 775,420,475.49/43,145.48
  6. Step 6: Final answer
    x = 17,972.23

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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.