Home / 20,133.74-27,783.46-11,180.68

Finding the Fourth Proportional to 20,133.74, 27,783.46 and 11,180.68

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Solution

The fourth proportional to 20,133.74, 27,783.46 and 11,180.68 is: 15,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.74 : 27,783.46 = 11,180.68 : x
  2. Step 2: Convert to fraction form
    20,133.74/27,783.46 = 11,180.68/x
  3. Step 3: Cross multiply
    20,133.74x = 27,783.46 × 11,180.68
  4. Step 4: Simplify right side
    20,133.74x = 310,637,920.07
  5. Step 5: Solve for x
    x = 310,637,920.07/20,133.74
  6. Step 6: Final answer
    x = 15,428.72

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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.