Home / 20,235.09-27,923.81-12,685.49

Finding the Fourth Proportional to 20,235.09, 27,923.81 and 12,685.49

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Solution

The fourth proportional to 20,235.09, 27,923.81 and 12,685.49 is: 17,505.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.09 : 27,923.81 = 12,685.49 : x
  2. Step 2: Convert to fraction form
    20,235.09/27,923.81 = 12,685.49/x
  3. Step 3: Cross multiply
    20,235.09x = 27,923.81 × 12,685.49
  4. Step 4: Simplify right side
    20,235.09x = 354,227,009.47
  5. Step 5: Solve for x
    x = 354,227,009.47/20,235.09
  6. Step 6: Final answer
    x = 17,505.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.