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Finding the Fourth Proportional to 13,011.51, 17,955.93 and 7,043.25

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Solution

The fourth proportional to 13,011.51, 17,955.93 and 7,043.25 is: 9,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.51 : 17,955.93 = 7,043.25 : x
  2. Step 2: Convert to fraction form
    13,011.51/17,955.93 = 7,043.25/x
  3. Step 3: Cross multiply
    13,011.51x = 17,955.93 × 7,043.25
  4. Step 4: Simplify right side
    13,011.51x = 126,468,103.97
  5. Step 5: Solve for x
    x = 126,468,103.97/13,011.51
  6. Step 6: Final answer
    x = 9,719.71

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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.