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Finding the Fourth Proportional to 13,021.70, 17,969.99 and 7,053.35

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Solution

The fourth proportional to 13,021.70, 17,969.99 and 7,053.35 is: 9,733.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.70 : 17,969.99 = 7,053.35 : x
  2. Step 2: Convert to fraction form
    13,021.70/17,969.99 = 7,053.35/x
  3. Step 3: Cross multiply
    13,021.70x = 17,969.99 × 7,053.35
  4. Step 4: Simplify right side
    13,021.70x = 126,748,503.85
  5. Step 5: Solve for x
    x = 126,748,503.85/13,021.70
  6. Step 6: Final answer
    x = 9,733.64

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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.