Home / 20,301.63-28,016.64-11,349.78

Finding the Fourth Proportional to 20,301.63, 28,016.64 and 11,349.78

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Solution

The fourth proportional to 20,301.63, 28,016.64 and 11,349.78 is: 15,662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.63 : 28,016.64 = 11,349.78 : x
  2. Step 2: Convert to fraction form
    20,301.63/28,016.64 = 11,349.78/x
  3. Step 3: Cross multiply
    20,301.63x = 28,016.64 × 11,349.78
  4. Step 4: Simplify right side
    20,301.63x = 317,982,700.34
  5. Step 5: Solve for x
    x = 317,982,700.34/20,301.63
  6. Step 6: Final answer
    x = 15,662.91

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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.