Home / 13,351.08-20,020.54-7,109.49

Finding the Fourth Proportional to 13,351.08, 20,020.54 and 7,109.49

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Solution

The fourth proportional to 13,351.08, 20,020.54 and 7,109.49 is: 10,661.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.08 : 20,020.54 = 7,109.49 : x
  2. Step 2: Convert to fraction form
    13,351.08/20,020.54 = 7,109.49/x
  3. Step 3: Cross multiply
    13,351.08x = 20,020.54 × 7,109.49
  4. Step 4: Simplify right side
    13,351.08x = 142,335,828.92
  5. Step 5: Solve for x
    x = 142,335,828.92/13,351.08
  6. Step 6: Final answer
    x = 10,661.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.