Home / 13,728.58-20,476.85-13,313.23

Finding the Fourth Proportional to 13,728.58, 20,476.85 and 13,313.23

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Solution

The fourth proportional to 13,728.58, 20,476.85 and 13,313.23 is: 19,857.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.58 : 20,476.85 = 13,313.23 : x
  2. Step 2: Convert to fraction form
    13,728.58/20,476.85 = 13,313.23/x
  3. Step 3: Cross multiply
    13,728.58x = 20,476.85 × 13,313.23
  4. Step 4: Simplify right side
    13,728.58x = 272,613,013.73
  5. Step 5: Solve for x
    x = 272,613,013.73/13,728.58
  6. Step 6: Final answer
    x = 19,857.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.