Home / 20,148.60-27,803.70-11,195.40

Finding the Fourth Proportional to 20,148.60, 27,803.70 and 11,195.40

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Solution

The fourth proportional to 20,148.60, 27,803.70 and 11,195.40 is: 15,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.60 : 27,803.70 = 11,195.40 : x
  2. Step 2: Convert to fraction form
    20,148.60/27,803.70 = 11,195.40/x
  3. Step 3: Cross multiply
    20,148.60x = 27,803.70 × 11,195.40
  4. Step 4: Simplify right side
    20,148.60x = 311,273,542.98
  5. Step 5: Solve for x
    x = 311,273,542.98/20,148.60
  6. Step 6: Final answer
    x = 15,448.89

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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.