Home / 13,109.09-19,646.35-5,313.65

Finding the Fourth Proportional to 13,109.09, 19,646.35 and 5,313.65

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Solution

The fourth proportional to 13,109.09, 19,646.35 and 5,313.65 is: 7,963.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.09 : 19,646.35 = 5,313.65 : x
  2. Step 2: Convert to fraction form
    13,109.09/19,646.35 = 5,313.65/x
  3. Step 3: Cross multiply
    13,109.09x = 19,646.35 × 5,313.65
  4. Step 4: Simplify right side
    13,109.09x = 104,393,716.16
  5. Step 5: Solve for x
    x = 104,393,716.16/13,109.09
  6. Step 6: Final answer
    x = 7,963.46

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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.