Home / 12,938.36-19,313.12-11,101.28

Finding the Fourth Proportional to 12,938.36, 19,313.12 and 11,101.28

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Solution

The fourth proportional to 12,938.36, 19,313.12 and 11,101.28 is: 16,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.36 : 19,313.12 = 11,101.28 : x
  2. Step 2: Convert to fraction form
    12,938.36/19,313.12 = 11,101.28/x
  3. Step 3: Cross multiply
    12,938.36x = 19,313.12 × 11,101.28
  4. Step 4: Simplify right side
    12,938.36x = 214,400,275.85
  5. Step 5: Solve for x
    x = 214,400,275.85/12,938.36
  6. Step 6: Final answer
    x = 16,570.90

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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.