Home / 18,669.47-27,999.79-5,342.05

Finding the Fourth Proportional to 18,669.47, 27,999.79 and 5,342.05

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Solution

The fourth proportional to 18,669.47, 27,999.79 and 5,342.05 is: 8,011.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.47 : 27,999.79 = 5,342.05 : x
  2. Step 2: Convert to fraction form
    18,669.47/27,999.79 = 5,342.05/x
  3. Step 3: Cross multiply
    18,669.47x = 27,999.79 × 5,342.05
  4. Step 4: Simplify right side
    18,669.47x = 149,576,329.86
  5. Step 5: Solve for x
    x = 149,576,329.86/18,669.47
  6. Step 6: Final answer
    x = 8,011.81

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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.